Wipro Company Numerical Ability Time and Work

A can do a piece of work in 9 days. B can do the same in 12 days. In how many days can the work be completed if A and B work together?
a) 5 1/9 days
b) 5 1/4 days
c) 5 1/3 days
d) 5 1/7 days

Read Solution (Total 2)

A's one day work=1/9
B's one day work=1/12
Both's one day work=1/9+1/12
=7/36
so they will take 36/7 days
36/7=5 1/7
12 years agoHelpfull: Yes(0) No(0)

d) 5 1/7 days
A's one day work =1/9
B's one day work=1/12
(A+B)'s one day work=1/9+1/12=7/36
time taken=36/7=5 1/7 days
11 years agoHelpfull: Yes(0) No(0)

Wipro Other Question

A piece of work can be done by 16 men in 8 days working 12 hours a day. How many men are needed to complete another work, which is three times the first one,in 24 days working 8 hours a day?
a)24 men
b)29 men
c)20 men
d)30 men A and B together can do a piece of work in 12 days and A alone can complete the work in 18 days. How long will B alone take to complete the job?
a)30 days
b)36 days
c)6 days
d)56 days