If 5 engines consume 6 metric tonnes of coal when each is running 9 hours a day, how much coal (in metric tonnes) will be needed for 8 engines, each running 10 hours a day?
Each engine consumes 6/(5*9) = 2/15 metric tonne of coal an hour. Therefore, the 8 engines will consume 10.67 metric tonne of coal a day.
A construction company employs 60 men to build a bridge of 500 m in 30 days working 8 hours a day. If in 24 days they completed 3/5 part of work, then how many more employees should be hired to finish the work in time, working 10 hours a day?
26 operators working 7 hours a day can complete a set of job in 24 days. In how many day will 21 operators working 8 hours a day do the same set of job?
30 men can load 60 bags of cement in a truck in 5 hours. If 5 men leave the job, how many cement bags will be loaded in 10 hours?
If 15 men take 21 days of 8 hours each to do a piece of work. How many days of 6 hours each would 21 women take, if 3 women do as much work as 2 men?
If A men working A hours a day can do A units of a work in A days, then how many units of work can be completed by B men working B hours per day.
