a can do a job in 20 days B in 30 days and C in 60 days if a is helped by B and C on every third day then in how many days will the job be finished
Answers
Answered by
91
Answer:
15 days
Step-by-step explanation:
work done by A in 1 day is 1/20
work done by B in 1 day is 1/30
work done by C in 1 day is 1/60
The first two days A works alone
1st day=1/20
2nd day=1/20
3rd day=1/20 + 1/30 + 1/60=1/10
In 3 days, 1/10 + 1/20 +1/20 =1/5 work is done
the whole work is done 15 days
Answered by
3
Answer:
15 days
Step-by-step explanation:
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