Question

10. A and B can do a piece of work in 30 days, while B and C can do the same work in 24 days and C and A in 20 days. If they all work together, in how many days will the work finish?​

Answer 1

Answer:

work done by A and B=1/30

work done by B and C=1/24

work done by C and A=1/20

work done by together =1/30+1/24+1/20(taking LCM of 30,24,20)

=4+5+6/120

=15/120

=1/8

work done by together =1/8

work done in day =8