UP POLICE MATHS QUIZ

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Question 1:

Three taps A, B and C can fill a tank in 50,60 and 30 hours respectively. How long (in hours) would the three taps take to fill the tank if all of them are together?

Question 2:

There are two inlet pipes $\mathrm{A}$ and $\mathrm{B}$ can fill a tank in 20 minutes and 30 minutes respectively. Outlet pipe C can empty the whole tank in 15 minutes. What time will they take (in minutes) to fill the whole tank, if they start together?

Question 3:

Tap A can fill a cistern in 12 minutes. Tap B can fill the same cistern in 20 minutes. There is an outlet pipe that can empty 42 litre of water in a minute. If all pipes are opened together, tank become full in 30 minutes. Find volume of tank.

Question 4:

Aman, Shubham and vikash can fill a tank in 20 days, 30 days and 15 days respectvely. In how many days Shubham and vikash together can fill the whole tank?

Question 5:

Which of the following number is not completely divisible by $87 .$

Question 6:

A container has two holes. The 1st hole alone empties the container in 15 minutes and 2nd hole alone empties the container in 10 minutes. If water leaks out at a constant rate, how long (in minutes) does it take if both the holes together empty the container?

Question 7:

Pipe A and Pipe B can fill a tank in 4 and 16 hours respectively. In how many hours they together can fill the tank.

Question 8:

A and B two pipes can fill a tank in 24 hours and 48 hours, respectively. If both pipes are opened simultaneously, how much time will it take to fill the tank?

Question 9:

Pipes A and B can empty a tank in 15 hours and 18 hours, respectively. Pipe C alone can fill the tank in 6 hours. If all the three pipes are opened together, then two-third part of the tank will be full after:

Question 10:

Pipes A and B can together fill a tank in 20 hours and pipe C can empty $40 \%$ of the tank in 20 hours. Find the time taken by all the 3 pipes together to fill $60 \%$ of the tank.