Wipro Company Numerical Ability Time and Work

A and B can do a work in12 days, B and C in 15 days, C and A in 20 days. If A,B and C work together, they will complete the work in how many days?

Read Solution (Total 3)

(A+B) in one day's work is 1/12
(B+c) in one day's work is 1/15
(C+A) in one day's work is 1/20
Thus, 2(A+B+C) in one day's work is 1/12+1/15+1/20=1/5
2(A+B+C) can complete the work in 5 days
Hence A, B and C can complete the work together in 10 days.
12 years agoHelpfull: Yes(1) No(0)

A+B=1/12
B+C=1/15
C+A=1/20

Adding three 1/12+1/15+1/20
(5+4+3)/60
12/60
1/5
then A,B AND C CAN DO THE WORK IN 5DAYS..
11 years agoHelpfull: Yes(0) No(0)
A+B=1/12
B+C=1/15
C+A=1/20

Adding three 1/12+1/15+1/20
(5+4+3)/60
12/60
1/5
then A,B AND C CAN DO THE WORK IN 10 DAYS..
11 years agoHelpfull: Yes(0) No(0)

Wipro Other Question

Two workers A and B are engaged to do a work. A working alone takes 8 hours more to complete the job than if both working together. If B worked alone, he would need 4 1/2 hours more to compete the job than they both working together. What time would they take to do the work together. A and B can do a work in 8 days, B and C can do the same wor in 12 days. A,B and C together can finish it in 6 days. A and C together will do it in how many days?