NCHMCT JEE 2020 Question Paper with solutions for online practice

Question : 71 of 200

Marks: +1, -0

Raj and Ram working together do a piece of work in 10 days. Raj alone can do it in 12 days. Ram alone will do the work in

Solution:

Given, work done by both in 1 day

=\;{1}/{10}

Work done by Raj in 1 day

=\;{1}/{12}

∴

Work done by Ram in 1 day

=\;{1}/{10}-\;{1}/{12}=\;{6-5}/{60}=\;{1}/{60}

∴

Ram alone can do the work in 60 days.

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