A,b,c can do piece of work in 20,30,60 days respectively.In how many days can a do the work if he is assisted by b,c on every third day
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Answer:
15 days
Step-by-step explanation:
a does 1/20th of work in one day
b does 1/30th of work in one day
c does 1/60th of work in one day
in 3 days, a will do 3/20the of work
b and c work for a day in 3 days so they work 1/30th and 1/60th of work in 3 days.
total work done in 3 days= 3/20+1/30+1/60=13/60
work done in 12 days= 52/60th
work done in 14 days= 52/60+ 2/20 = 58/60
so the work will be completed at the15th day.
they won't take the entire 15th day to complete the work
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