Question

A, B and C working together can finish a piece of work in 8 hours.A alone can do it in 20 hours and B alone can do it in 24 hours.In how many hours will C alone do the same work?​

Answer 1

Answer:

ANSWER

A,B,C working together complete a work in 8 hours.

∴ In one hour they can complete 81th of work.

A can alone do the work in 20hr

∴ In one hour A can complete 201th of work.

B can alone do the work in 24hr.

∴ In one hour B can do 241th of work.

Let in one hour C can do x1th of work.

∴201+24!+x1=81

⇒x1=81−(201+241)

=81−20×2444

=81−12011

=12015−11=1204

=3

Answer 2

Answer:

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