Question

A completes a work alone in 10 days, B completes the same work alone in 12 days and C completes the
work alone in 15 days. In how many days they do in all working together?​

Answer 1

Answer: 4 days

Step-by-step explanation:

work done in day

A=1/10

B=1/12

C= 1/15

A+B+C compete in one day=1/10+1/12+1/15

= 15/60

a+b+c complete work in 4days

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