MAINS ARITHMETIC A and B alone can do a piece of work | Data Interpertation & airthmatic

MAINS ARITHMETIC


A and B alone can do a piece of work in x and (x+10) days respectively and they work together can finish the work in 9 3/8 days. Then find the efficiency ratio of A and B?

a) 2:7
b) 5:3
c) 2:3
d) 1:3
e) 4:5

A, B and C all together can do a piece of work in 5 5/11 days. A takes 2 days less than the no of days taken by B and C together then find the no of days taken by A alone?

a) 12
b) 15
c) 10
d) 16
e) 20

A project manager hired 25 boys to complete a project in 10 days. 25 boys started working, after 8 days project manager notices only four-fifth of the work was completed, then how many extra boys required completing the remaining work on time?

a) 2
b) 4
c) 1
d) 0
e) 6


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