Aptitude Test 3

A can do a piece of work in 30 days, while B can do it in 40 days. A and B working together can do it in how many days?

A group of men decided to do a job in 8 days. But since 10 men dropped out every day, the job got completed at the end of the 12th day. How many men were there at the beginning?

A can do a piece of work in 15 days and B alone can do it in 10 days. B works at it for 5 days and then leaves. A alone can finish the remaining work in

The work done by a man, a women and a child is in the ratio 3 : 2: 1. If daily wages of 20 men, 30 women and 36 children amount to Rs.78 What will be the wages of 15 men, 21women and 30 children for 18 weeks?

Two workers A and B working together completed a job in 5 days. If A worked twice as efficiently as he actually did and B worked 1/3 as efficiently as he actually did, the work would have completed in 3 days. Find the time for A to complete the job alone.

Two pipes A and B can fill a cistern in 24 min and 30 min respectively. There is also an outlet C. If all the three pipes are opened together, the tank is full in 20 min. How much time will be taken by C to empty the full tank?

Pipes A,B,C are attached to a cistern. A and B can fill it in 20 and 30 min respectively, while C can empty it in 15 min. If A, B and C are kept in operation successively for one minute each, how soon will the cistern be filled?

Two pipes P and Q can fill a cistern in 12 and 16 min respectively. Both the pipes are opened together, but 4 min before the cistern is full, one pipe A is closed, How much time will the cistern take to fill?

Three pipes A,B, and C can fill a cistern in 10 h, 12 h, and 15 h respectively. First A was opened. After 1h, B was opened and after 2 h from the start of A, C was also opened.
Find the time in which the cistern is just full.

12 buckets of water fill a tank when the capacity of each bucket is 35.5 L. How many buckets will be needed to fill the same tank, if the capacity of each bucket is 9L?