Question

give me answer I want it fast​

Answer 1

Answer:

Given ,

A and B can complete the work in 12days

Time taken by A and B to complete the work in 1 day =1/12

B and C can complete the work in 15 days.

Time taken by B and to complete the work in 1 day =1/15

C and A can complete the work in 20 days .

Time taken by A and C to complete the work in 1 day =1/20

Time taken by A,BandC to complete the work in 1 day =2(1/12+1/15+1/20)

=2((5+4+3)/60)

=2×12/60

= 1/10

Time taken by A ,B andC=10days

Now, time taken by B to finish the job=1/10-1/20(A+C)

=1/20

Therefore, B will take 20 days to finish the work...

Hopefully, this answer will help you friend...