Mathematics mcqs

positive integers indicated by x and y satisfy 3 1/x * y 2/5 = 13 3/4, the fractions being in their lowest terms, then x = ? and y = ------------?

positive integers indicated by x and y satisfy 3 1/x * y 2/5 = 13 3/4, the fractions being in their lowest terms, then x = ? and y = ------------?

x = 4, y = 4

x = 4, y = 8

x = 2, y = 4

x = 8, y = 4

pipes p and q would fill a cistern 18 and 24 minutes respectively. both pipes being opened, find when the first pipe must be turned off so that the cistern may be just filled in 12 minutes?

pipes p and q would fill a cistern 18 and 24 minutes respectively.

after 8 1/2 mins

after 10 mins

after 9 mins

after 12 mins

pipes a and b can fill a tank in 5 and 6 hours respectively. pipe c can empty it in 12 hours. if all the three pipes are opened together, then the tank will be filled in?

pipes a and b can fill a tank in 5 and 6 hours respectively. pipe c can empty it in 12 hours.

3 9/17 hours

1 13/17 hours

2 8/11 hours

4 1/2 hours

pipe a can fill a tank in 16 minutes and pipe b cam empty it in 24 minutes. if both the pipes are opened together after how many minutes should pipe b be closed, so that the tank is filled in 30 minutes?

pipe a can fill a tank in 16 minutes and pipe b cam empty it in 24 minutes.

24

none of these

20

23

p takes twice as much time as q or thrice as much time as r to finish a piece of work. they can finish the work in 2 days if work together. how much time will q take to do the work alone?

p takes twice as much time as q or thrice as much time as r to finish a piece of work. they can finish the work in 2 days if work together.

7

6

9

8

p can lay railway track between two stations in 16 days. q can do the same job in 12 days. with the help of r, they completes the job in 4 days. how much days does it take for r alone to complete the work?

p can lay railway track between two stations in 16 days. q can do the same job in 12 days. with the help of r, they completes the job in 4 days.

9(3/5) days

9(2/5) days

9(1/5) days

10 days

p can do a work in the same time in which q and r together can do it. if p and q work together, the work can be completed in 10 days. r alone needs 50 days to complete the same work. then q alone can do it in----------?

p can do a work in the same time in which q and r together can do it. if p and q work together, the work can be completed in 10 days.

15 days

25 days

20 days

30 days

p can do a work in 24 days. q can do the same work in 9 days and r can do the same in 12 days. q and r start the work and leave after 3 days. p finishes the remaining work in---------days.

p can do a work in 24 days. q can do the same work in 9 days and r can do the same in 12 days. q and r start the work and leave after 3 days.

11

12

10

9

p and q started a business with respective investments of rs. 4 lakhs and rs. 10 lakhs. as p runs the business, his salary is rs. 5000 per month. if they earned a profit of rs. 2 lakhs at the end of the year, then find the ratio of their earnings?

p and q started a business with respective investments of rs. 4 lakhs and rs. 10 lakhs. as p runs the business, his salary is rs. 5000 per month.

1:01

3:05

5:02

2:05

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