A, B and C together can do a piece of work in 15 days, B alone can do it in 30 days and C alone can do it in 40 days. In how many days will A alone do the work?
Solution:
A, B and C working together can plough a field in 
days. A and C together can do it in 8 days. How long would B working alone take to plough the field?
Solution:
A pipe can fill a tank in 12 hours. By mistake, a waste pipe in the bottom is left opened and the tank is filled in 16 hours. If the tank is full, how much time will the waste pipe take to empty it?
Solution:
More Solutions:
- Observe the following tables and find if x
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- Mass of an aluminium rod varies directly with its length
- A 23 m 75 cm high water tank casts a shadow 20 m