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Question 1 of 10

1. Question

1 points

Category: Quantitative Aptitude

Directions (Q1-5). 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/h

Incorrect

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 points

Category: Quantitative Aptitude

Directions (Q1-5). 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:

Directions (Q1-5). 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 hours

Incorrect

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 points

Category: Quantitative Aptitude

Directions (Q1-5). 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 hours

Incorrect

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 points

Category: Quantitative Aptitude

Directions (Q1-5). 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?

Directions (Q6-10). 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) = 272

Incorrect

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 points

Category: Quantitative Aptitude

Directions (Q6-10). 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 points

Category: Quantitative Aptitude

Directions (Q6-10). 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 = 55:28

Incorrect

Answer- 3) 55:28
Explanation-
Required ratio = 220/112 = 55:28

Question 9 of 10

9. Question

1 points

Category: Quantitative Aptitude

Directions (Q6-10). 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 points

Category: Quantitative Aptitude

Directions (Q6-10). 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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