A and B together can finish a piece of work in 12 days. If‘A’alone can finish the same
work in 20days, in how many days B alone can finish it?
Answers
Answered by
2
Answer:
so a+b =12 days so in one day they do 1/12 work and similarly a can do 1/20 work in one day subtracting 1/a from 1/a+b you get 1/ b = 2/60,which gives b=30 days
Answered by
5
Answer is 30 days
Step by step explanation:
A can do in one day 1/20
A and B together can do 1/12
=1/12 - 1/20
=5-3/60
=2/60
=1/30
therefore B takes 30 days to complete
Similar questions