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Question 1 of 10

1. Question

1 points

Category: Quantitative Aptitude

Directions (Q1-5). There are total 6400 voters in three villages A, B and C. Ratio of total voters in A, B and C is 6:7:3 respectively. Ratio of male voters in A to male voters in B is 4:3. Number of male voters in B are 50% more than the male voters in C. Ratio of female voters in A to female voters in B is 1:2.

Total number of male voters in B are how much percent more than the total number of female voters in C?

Correct

Answer- 2) 200%
Explanation- Total number of voters in A = 6400/16 × 6 = 2400
Total number of voters in B = 6400/16 × 7 = 2800
Total number of voters in C = 6400/16 × 3 = 1200
Let the number of male voters in A is 4x and the number of male voters in B is 3x.
Then the number of male voters in C = 3x/150 × 100 = 2x
Let the number of female voters in A is y and the number of female voters in B is 2y.
According to question,
4x + y = 2400…….. (1)
Also, 3x + 2y = 2800……… (2)
By solving both equations, we have, x = 400, y = 800
Number of male voters in A = 4 × 400 = 1600
Number of male voters in B = 3 × 400 = 1200
Number of male voters in C = 2 × 400 = 800
Number of female voters in A = 800
Number of female voters in B = 2 × 800 = 1600
Number of female voters in C = 1200 – 800 = 400
Required ratio = (1200 – 400)/400 = 200%

Incorrect

Answer- 2) 200%
Explanation- Total number of voters in A = 6400/16 × 6 = 2400
Total number of voters in B = 6400/16 × 7 = 2800
Total number of voters in C = 6400/16 × 3 = 1200
Let the number of male voters in A is 4x and the number of male voters in B is 3x.
Then the number of male voters in C = 3x/150 × 100 = 2x
Let the number of female voters in A is y and the number of female voters in B is 2y.
According to question,
4x + y = 2400…….. (1)
Also, 3x + 2y = 2800……… (2)
By solving both equations, we have, x = 400, y = 800
Number of male voters in A = 4 × 400 = 1600
Number of male voters in B = 3 × 400 = 1200
Number of male voters in C = 2 × 400 = 800
Number of female voters in A = 800
Number of female voters in B = 2 × 800 = 1600
Number of female voters in C = 1200 – 800 = 400
Required ratio = (1200 – 400)/400 = 200%

Question 2 of 10

2. Question

1 points

Category: Quantitative Aptitude

Directions (Q1-5). There are total 6400 voters in three villages A, B and C. Ratio of total voters in A, B and C is 6:7:3 respectively. Ratio of male voters in A to male voters in B is 4:3. Number of male voters in B are 50% more than the male voters in C. Ratio of female voters in A to female voters in B is 1:2.

What is the ratio of total number of male voters in B and C together to the total number of female voters in A and B together?

Directions (Q1-5). There are total 6400 voters in three villages A, B and C. Ratio of total voters in A, B and C is 6:7:3 respectively. Ratio of male voters in A to male voters in B is 4:3. Number of male voters in B are 50% more than the male voters in C. Ratio of female voters in A to female voters in B is 1:2.

What is the difference between the total number of male voters and total number of female voters in all the villages together?

Directions (Q1-5). There are total 6400 voters in three villages A, B and C. Ratio of total voters in A, B and C is 6:7:3 respectively. Ratio of male voters in A to male voters in B is 4:3. Number of male voters in B are 50% more than the male voters in C. Ratio of female voters in A to female voters in B is 1:2.

Total number of female voters in village A are how much percent of the total number of male voters in village C?

Directions (Q1-5). There are total 6400 voters in three villages A, B and C. Ratio of total voters in A, B and C is 6:7:3 respectively. Ratio of male voters in A to male voters in B is 4:3. Number of male voters in B are 50% more than the male voters in C. Ratio of female voters in A to female voters in B is 1:2.

What is the difference between average number of female voters in A and B together to the average number of male voters in B and C together?

Correct

Answer- 4) 200
Explanation- Average number of female voters in A and B together = (800 + 1600)/2 = 1200
Average number of male voters in B and C together = (1600 + 400)/2 = 1000
Required difference = 1200 – 1000 = 200

Incorrect

Answer- 4) 200
Explanation- Average number of female voters in A and B together = (800 + 1600)/2 = 1200
Average number of male voters in B and C together = (1600 + 400)/2 = 1000
Required difference = 1200 – 1000 = 200

Question 6 of 10

6. Question

1 points

Category: Quantitative Aptitude

There are ‘x’ number of white and 15 black marbles in a bag. The probability of taking out one white marble is 4/7. What is the total number of marbles in the bag?

Correct

Answer- 3) 35
Explanation- Probability of taking out one white marble = x/(x + 15) = 4/7
Therefore, 7x = 4x + 60
3x = 60, x = 20
Total number of marbles = 20 + 15 = 35

Incorrect

Answer- 3) 35
Explanation- Probability of taking out one white marble = x/(x + 15) = 4/7
Therefore, 7x = 4x + 60
3x = 60, x = 20
Total number of marbles = 20 + 15 = 35

Question 7 of 10

7. Question

1 points

Category: Quantitative Aptitude

A boat takes 15 hours to cover a certain distance upstream and it takes 11 hours to cover the same distance downstream. What is the ratio of speed of boat in still water to the speed of the current?

Correct

Answer- 4) 13:2
Explanation- Ratio of time takes for going same distance upstream to downstream = 15:11
Ratio of speeds will be opposite i.e. 11:15
Let the speed of boat upstream is 11x and the speed downstream is 15x.
Speed of boat in still water = (11x + 15x)/2 = 13x
Speed of current = (15x – 11x)/2 = 2x
Required ratio = 13x:2x = 13:2

Incorrect

Answer- 4) 13:2
Explanation- Ratio of time takes for going same distance upstream to downstream = 15:11
Ratio of speeds will be opposite i.e. 11:15
Let the speed of boat upstream is 11x and the speed downstream is 15x.
Speed of boat in still water = (11x + 15x)/2 = 13x
Speed of current = (15x – 11x)/2 = 2x
Required ratio = 13x:2x = 13:2

Question 8 of 10

8. Question

1 points

Category: Quantitative Aptitude

Length of a train A is 240 m and its speed is 25 m/s. It crosses a train B of length 210 m in 7.5 sec. What is the speed of train B?

Correct

Answer- 1) 126 km/h
Explanation- Let the speed of train B is x.
Then, according to question
(240 + 210)/(25 + x) = 7.5
By solving, we have, x = 35 m/s = 35 × 18/5 = 126 km/h

Incorrect

Answer- 1) 126 km/h
Explanation- Let the speed of train B is x.
Then, according to question
(240 + 210)/(25 + x) = 7.5
By solving, we have, x = 35 m/s = 35 × 18/5 = 126 km/h

Question 9 of 10

9. Question

1 points

Category: Quantitative Aptitude

A can do a piece of work in 24 days. B is 60% more efficient than A. Both of them started working together but B left after 5 days and remaining work was completed by A alone. Number of days for which A worked alone is:

Correct

Answer- 2) 11 days
Explanation- No of days taken by A to complete work alone = 24 days
No of days taken by B = 24/160 × 100 = 15 days
We have,

Let the number of days for which A worked alone is x
Then, 13 × 5 + 5x = 120
5x = 55, x = 11

Incorrect

Answer- 2) 11 days
Explanation- No of days taken by A to complete work alone = 24 days
No of days taken by B = 24/160 × 100 = 15 days
We have,

Let the number of days for which A worked alone is x
Then, 13 × 5 + 5x = 120
5x = 55, x = 11

Question 10 of 10

10. Question

1 points

Category: Quantitative Aptitude

A and B start at the same time with speed of 60 km/h and 80 km/h respectively. In covering the journey A takes 20 min more than B. What is the total distance of the journey?

Correct

Answer- 2) 80 km
Explanation- Ratio of speeds of cars A and B = 60:80 = 3:4
Ratio of time taken by them = 4:3
Time taken by B to complete the journey = 20/1 × 3 = 60 min = 1 hour
Distance of the journey = 80 × 1 = 80 km

Incorrect

Answer- 2) 80 km
Explanation- Ratio of speeds of cars A and B = 60:80 = 3:4
Ratio of time taken by them = 4:3
Time taken by B to complete the journey = 20/1 × 3 = 60 min = 1 hour
Distance of the journey = 80 × 1 = 80 km

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