Question

A can do a work in 15 days. B can do it in 20 days and A,B anc C can do it in 8 days.
C alone can do the work in?

Answer 1

Answer:

Ans is 120 day's

Step-by-step explanation:

Eff

A------------15 Days 8

B------------20 Days TW=120 6

A+B+C-----8 Days 15

so, Efficiency of C=A+B+C-(A+B)=15-14=1

SO, Time Taken By C=120/1

=120 day's