TS ICET 24 May 2019 Shift 1 Paper

Question : 100 of 200

Marks: +1, -0

R and S can finish a job in 10 days, S and M can finish it in 12 days and M and R can finish it in 15 days. In how many days will R, S and M together finish the job?

8
7
$6 1/2$
6

Validate

Solution:

(R + S) in 1 day can do

1/10

work
(S + M) in one day can do

1/12

work
Part of the work done by R, S and M in 1 day

\;{1}/{2}(\;{1}/{10}+\;{1}/{12}+\;{1}/{15})=\;{1}/{8}

∴ R, S, M together can do it in 8 days.

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