self Exam Numerical Ability

A contractor undertook to do a certain piece of work in 18 days. He employed certain number of men but 12 of them being absent from the very 1st day, the rest could finish the work in 30 days. Find the number of men originally employed

Read Solution (Total 2)

30 men
If number of men originally employed=x,their 1 day work=1/18
So 1 man,1 day work=1/(18x)
1 man,30 day work=30/18x
As men are reduced by 12,So (x-12) men completes the work in 30 days
x-12=1/(30/18x),x=30
10 years agoHelpfull: Yes(1) No(0)

Let total number of employee be x
(1÷18)-(12/18x)=1/30
X=30
10 years agoHelpfull: Yes(0) No(0)

self Other Question

If ‘A’ can do a piece of work in n days, then at a uniform rate of working ‘A’ will finish th work in one day. If of a work is done by ‘A’ in one day, then ‘A’ will take n days to complete the full work a computer is marked at rs. 156000 and it is available for rs. 11880. find the discount given and discount per cent.