1. 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 left. Then B and C together completed the work
in 10 more days. A lone could complete the work in
(a) 15 days (b) 16 days(c) 25 days (d) 50 days
Answers
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1
Answer:
25 days
Step-by-step explanation:
(A+B+C) do 1 work in 10 days.
(A+B+C)'s 1 day work = 1/10
They work together for 4 days.
∴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 125 work in 1 day
A alone could complete the work in 25days
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