Question

Q7 A can do a job in 10 days, B in 15 days and C in 30 days. If A is helped by B and C on every
third day then in how many days will the job be finished?

​

Answer 1

Answer:

5days

Step-by-step explanation:

Let assume total work is 30nos.

A alone can finish it in 10 days A's one day work is 3nos.

B alone can finish it in 15 days B's one day work is 2nos.

C alone can finish it in 30 day C's one day work is 1nos.

A, B, C together do in one day =3+2+1=6nos.

A,B,C together finish the whole job in 30/6=5days