time and work Model Questions & Answers, Practice Test for ssc cgl tier 1 2023

Two taps can fill a tank in 12 and 18 minutes respectively. Both are kept open for 2 minutes and the first is turned off. In how many minutes more will the tank be filled ?

A contractor undertakes to do a piece of work in 40 days. He engages 100 men at the beginning and 100 more after 35 days and completes the work in stipulated time. If he had not engaged the additional men, how many days behind schedule would it be finished ?

A and B can do a job in 16 days and 12 days respectively. 4 days before finishing the job, A joins B. B has started the work alone. Find how many days B has worked alone ?

A train 100 metres long takes 3$3/5$ seconds to cross a man walking at the rate of 6 km/h in a direction opposite to that of train. Find the speed of the train.

A and B can do a piece of work in 40 days. After working for 10 days they are assisted by 'C' and work is finished in 20 days more. If 'C' does as much work as B does in 3 days, in how many days A alone can do the work.