Question

A, B and C together can complete a piece of work in 10 days. All the three started working at it together and after 4 days 'A' letter. Then B and C together completed the work in 10 more days. A alone can complete the work in

(A) 15 days (B) 16 days

(C) 25 days

(D) 26 days​

Answer 1

Answer:

25 is the answer

Step-by-step explanation:

Explanation:

(A+B+C) do 1 work in 10 days.

So (A+B+C)'s 1 day work=1/10 and as they work together for 4 days so workdone by them in 4 days=4/10=2/5

Remaining work=1-2/5=3/5

(B+C) take 10 more days to complete 3/5 work. So( B+C)'s 1 day work=3/50

Now A'S 1 day work=(A+B+C)'s 1 day work - (B+C)'s 1 day work=1/10-3/50=1/25

A does 1/25 work in in 1 day

Therefore 1 work in 25 days. hope it will help you