DSSSB TGT · Section A — Arithmetical and Numerical Ability
Pipes, cisterns and combined work problems.
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Q1 · Time and Work · EASY
A can complete a work in 12 days and B can complete the same work in 18 days. If both work together, in how many days will they complete the work?
Q2 · Time and Work · MEDIUM
A pipe can fill a tank in 15 hours. Due to a leak at the bottom, it takes 20 hours to fill the tank. If the tank is full, how long will the leak take to empty it?
Q3 · Time and Work · MEDIUM
15 men can complete a piece of work in 20 days. After 5 days, 5 more men joined them. In how many more days will the work be completed?
Q4 · Time and Work · MEDIUM
Two pipes A and B can fill a cistern in 12 minutes and 16 minutes respectively. Both pipes are opened together but after 3 minutes, pipe A is closed. How much more time will it take to fill the cistern?
Q5 · Time and Work · HARD
A, B and C can complete a work in 10, 12 and 15 days respectively. All three started working together but A left after 2 days and B left 3 days before the completion of work. In how many days was the work completed?