Latest exam Aptitude Question SOLUTION: Ram starts working on a job and works on it for 12 days and completes 40% of the work. To help him complete the work, he employs Ravi and together they work for another 12 days and

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(#M40020677) EXAM question time and work Keep an EYE

Ram starts working on a job and works on it for 12 days and completes 40% of the work. To help him complete the work, he employs Ravi and together they work for another 12 days and the work gets completed. How much more efficient is Ram than Ravi?

A.

50%

B.

200%

C.

125%

D.

100%

Asked In exam MAN (10 years ago)

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Devendra Marghade  (10 years ago)

B. 200%
work by Ram in 12 days 40% or 40/100=2/5, so work in 1 day=2/5*12=1/30
After 12 days work of Ram, work remaining=1-(2/5)=3/5
Remaining work is completed in another 12 days,
so 1 day work of Ram & Ravi=3/5*12=3/60=1/20
If Ravi's 1 day work=1/x, (Ram+Ravi) 1day work=1/30 + 1/x = 1/20 or 1/x=1/60
Efficiency of Ram to Ravi in %=100[(1/30)/(1/60)]=200

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