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Question 1 of 10
1. Question
1 pointsCategory: Quantitative AptitudeDirections (Q15). The following table shows the downstream speed and upstream speed of a boat on different days of a week and bar graph shows the distance travelled by boat on those days (in km). Based on this information, answer the following questions.
Speed of boat in still water on Wednesday is how much more than that on Monday?
Correct
Answer 4) 10 km/h
Explanation
Speed of boat in still water on Wednesday = (70 + 30)/2 = 50 km/h
Speed of boat in still water on Monday = (50 + 30)/2 = 40 km/h
Required difference = 50 – 40 = 10 km/hIncorrect
Answer 4) 10 km/h
Explanation
Speed of boat in still water on Wednesday = (70 + 30)/2 = 50 km/h
Speed of boat in still water on Monday = (50 + 30)/2 = 40 km/h
Required difference = 50 – 40 = 10 km/h 
Question 2 of 10
2. Question
1 pointsCategory: Quantitative AptitudeDirections (Q15). The following table shows the downstream speed and upstream speed of a boat on different days of a week and bar graph shows the distance travelled by boat on those days (in km). Based on this information, answer the following questions.
Total time taken by boat to travel both upstream and downstream together on Thursday is:
Correct
Answer 3) 12 hours
Explanation
Required time = 378/54 + 180/36 = 7 + 5 = 12 hoursIncorrect
Answer 3) 12 hours
Explanation
Required time = 378/54 + 180/36 = 7 + 5 = 12 hours 
Question 3 of 10
3. Question
1 pointsCategory: Quantitative AptitudeDirections (Q15). The following table shows the downstream speed and upstream speed of a boat on different days of a week and bar graph shows the distance travelled by boat on those days (in km). Based on this information, answer the following questions.
What will be the time taken by boat to travel 175 km in still water on Tuesday?
Correct
Answer 2) 3.5 hours
Explanation
Speed of the boat in still water on Tuesday = (60 + 40)/2 = 100/2 = 50 km/h
Required time = 175/50 = 3.5 hoursIncorrect
Answer 2) 3.5 hours
Explanation
Speed of the boat in still water on Tuesday = (60 + 40)/2 = 100/2 = 50 km/h
Required time = 175/50 = 3.5 hours 
Question 4 of 10
4. Question
1 pointsCategory: Quantitative AptitudeDirections (Q15). The following table shows the downstream speed and upstream speed of a boat on different days of a week and bar graph shows the distance travelled by boat on those days (in km). Based on this information, answer the following questions.
Speed of the boat in still water on Saturday is the sum of speeds of boat in still water on Thursday and Friday and speed of stream on Saturday is sum of speed of streams on Monday and Wednesday. Time taken by the boat to travel 230 km upstream on Saturday is:
Correct
Answer 5) 4.6 hours
Explanation
Speed of boat in still water on Saturday = (54 + 36)/2 + (45 + 25)/2 = 45 + 35 = 80 km/h
Speed of stream on Saturday = (50 – 30)/2 + (70 – 30)/2 = 10 + 20 = 30 km/h
Required time = 230/(80 – 30) = 230/50 = 4.6 hoursIncorrect
Answer 5) 4.6 hours
Explanation
Speed of boat in still water on Saturday = (54 + 36)/2 + (45 + 25)/2 = 45 + 35 = 80 km/h
Speed of stream on Saturday = (50 – 30)/2 + (70 – 30)/2 = 10 + 20 = 30 km/h
Required time = 230/(80 – 30) = 230/50 = 4.6 hours 
Question 5 of 10
5. Question
1 pointsCategory: Quantitative AptitudeDirections (Q15). The following table shows the downstream speed and upstream speed of a boat on different days of a week and bar graph shows the distance travelled by boat on those days (in km). Based on this information, answer the following questions.
Speed of boat in still water on Friday is how much more than the speed of stream on the same day?
Correct
Answer 1) 25 km/h
Explanation
Required difference = (45 + 25)/2 – (45 – 25)/2 = 35 – 10 = 25 km/hIncorrect
Answer 1) 25 km/h
Explanation
Required difference = (45 + 25)/2 – (45 – 25)/2 = 35 – 10 = 25 km/h 
Question 6 of 10
6. Question
1 pointsCategory: Quantitative AptitudeDirections (Q610). In a college there are 1800 students who are doing PG in any one of the five subjects i.e. Zoology, Botany, Mathematics, Physics and Chemistry. Ratio of number of boys to number of girls in the college is 11:7 respectively. 20% of the total number of boys study zoology and 18% of the total number of girls study zoology as well. Ratio of number of boys to girls who study botany is 16:9. 5% of the total number of boys study Mathematics and 22% of the total number of girls study Mathematics. Total number of students who study Physics are 510. Number of girls who study physics are 20% of the number of boys who study physics. Remaining 288 boys study Chemistry.
Number of girls who study chemistry are:
Correct
Answer 4) 272
Explanation
Number of boys in the college = 1800/18 × 11 = 1100
Number of girls in the college = 1800/18 × 7 = 700
Number of boys who study zoology = 20% of 1100 = 220
Number of girls who study zoology = 18% of 700 = 126
Number of boys who study mathematics = 5% of 1100 = 55
Number of girls who study mathematics = 22% of 700 = 154
Number of boys who study physics = 510/120 × 100 = 425
Number of girls who study physics = 510 – 425 = 85
Number of boys who study chemistry = 288
Number of boys who study botany = 1100 – (220 + 55 + 425 + 288) = 112
Number of girls who study botany = 112/16 × 9 = 63
Number of girls who study chemistry = 700 – (126 + 154 + 85 + 63) = 272Incorrect
Answer 4) 272
Explanation
Number of boys in the college = 1800/18 × 11 = 1100
Number of girls in the college = 1800/18 × 7 = 700
Number of boys who study zoology = 20% of 1100 = 220
Number of girls who study zoology = 18% of 700 = 126
Number of boys who study mathematics = 5% of 1100 = 55
Number of girls who study mathematics = 22% of 700 = 154
Number of boys who study physics = 510/120 × 100 = 425
Number of girls who study physics = 510 – 425 = 85
Number of boys who study chemistry = 288
Number of boys who study botany = 1100 – (220 + 55 + 425 + 288) = 112
Number of girls who study botany = 112/16 × 9 = 63
Number of girls who study chemistry = 700 – (126 + 154 + 85 + 63) = 272 
Question 7 of 10
7. Question
1 pointsCategory: Quantitative AptitudeDirections (Q610). In a college there are 1800 students who are doing PG in any one of the five subjects i.e. Zoology, Botany, Mathematics, Physics and Chemistry. Ratio of number of boys to number of girls in the college is 11:7 respectively. 20% of the total number of boys study zoology and 18% of the total number of girls study zoology as well. Ratio of number of boys to girls who study botany is 16:9. 5% of the total number of boys study Mathematics and 22% of the total number of girls study Mathematics. Total number of students who study Physics are 510. Number of girls who study physics are 20% of the number of boys who study physics. Remaining 288 boys study Chemistry.
Number of girls who study mathematics are how much less than the number of boys who study physics?
Correct
Answer 2) 271
Explanation
Required difference = 425 – 154 = 271 (see the explanation of Q6)Incorrect
Answer 2) 271
Explanation
Required difference = 425 – 154 = 271 (see the explanation of Q6) 
Question 8 of 10
8. Question
1 pointsCategory: Quantitative AptitudeDirections (Q610). In a college there are 1800 students who are doing PG in any one of the five subjects i.e. Zoology, Botany, Mathematics, Physics and Chemistry. Ratio of number of boys to number of girls in the college is 11:7 respectively. 20% of the total number of boys study zoology and 18% of the total number of girls study zoology as well. Ratio of number of boys to girls who study botany is 16:9. 5% of the total number of boys study Mathematics and 22% of the total number of girls study Mathematics. Total number of students who study Physics are 510. Number of girls who study physics are 20% of the number of boys who study physics. Remaining 288 boys study Chemistry.
Ratio of the number of boys who study zoology to the number of boys who study botany respectively is:
Correct
Answer 3) 55:28
Explanation
Required ratio = 220/112 = 55:28Incorrect
Answer 3) 55:28
Explanation
Required ratio = 220/112 = 55:28 
Question 9 of 10
9. Question
1 pointsCategory: Quantitative AptitudeDirections (Q610). In a college there are 1800 students who are doing PG in any one of the five subjects i.e. Zoology, Botany, Mathematics, Physics and Chemistry. Ratio of number of boys to number of girls in the college is 11:7 respectively. 20% of the total number of boys study zoology and 18% of the total number of girls study zoology as well. Ratio of number of boys to girls who study botany is 16:9. 5% of the total number of boys study Mathematics and 22% of the total number of girls study Mathematics. Total number of students who study Physics are 510. Number of girls who study physics are 20% of the number of boys who study physics. Remaining 288 boys study Chemistry.
Approximately how much percent of the students study mathematics out of total number of students in the college?
Correct
Answer 3) 12%
Explanation
Total number of students who study mathematics = 55 + 154 = 209
Required percentage = 209/1800 × 100 = 12% (approx.)Incorrect
Answer 3) 12%
Explanation
Total number of students who study mathematics = 55 + 154 = 209
Required percentage = 209/1800 × 100 = 12% (approx.) 
Question 10 of 10
10. Question
1 pointsCategory: Quantitative AptitudeDirections (Q610). In a college there are 1800 students who are doing PG in any one of the five subjects i.e. Zoology, Botany, Mathematics, Physics and Chemistry. Ratio of number of boys to number of girls in the college is 11:7 respectively. 20% of the total number of boys study zoology and 18% of the total number of girls study zoology as well. Ratio of number of boys to girls who study botany is 16:9. 5% of the total number of boys study Mathematics and 22% of the total number of girls study Mathematics. Total number of students who study Physics are 510. Number of girls who study physics are 20% of the number of boys who study physics. Remaining 288 boys study Chemistry.
If the number of girls who study zoology are somehow increased by 50%, then the number of girls who study zoology will be how much percent more than the number of girls who study botany?
Correct
Answer 4) 200%
Explanation
Number of girls who study zoology = 150% of 126 = 1.5 × 126 = 189
Required percentage = (189 – 63)/63 × 100 = 200%Incorrect
Answer 4) 200%
Explanation
Number of girls who study zoology = 150% of 126 = 1.5 × 126 = 189
Required percentage = (189 – 63)/63 × 100 = 200%
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