Question

Il 27 Udys
we C and A can
IJU. I now many days can A, B, C finish it, if they all work together?
13. A and B can do a piece of work in 12 days, B and C in 15 days, and C and A in 20 days. How
much time will A alone take to finish the job?
14. Pipes A and B​

Answer 1

Answer:

A alone can do the ob in 30 days

Step-by-step explanation:

Given,

A and B can do a piece of work in 12 days,

A+B=1/12 days

B and C in 15 days

B+C=1/15 days

C and A in 20 days.

C+A=1/20 days

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

2(A+B+C)=5+4+3/60

2(A+B+C)=12/60

2(A+B+C)=1/5

(A+B+C)=1/10

substitute B+C=1/15 days in the above Equation we will get A's individual work

A=1/10-(B+C)

A=1/10-1/15

A=3-2/30

A=1/30