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  1. The efficiency of Romil is twice that of Sanjay and he can finish a work in 4 h less than the time taken by Sanjay. If both of them work together they can finish the same work in ?
    1. 8 h
    2. 3 h
    3. 8 / 3 h
    4. 4 / 3 h
Correct Option: C

As the efficience of Romil is twice that of Sanjay, Romil, will take x h for completeion of the work, when Sanjay is taking 2x h.
Given, 2x - x = 4
⇒ x = 4
Hence, they take = 1/(1/4 + 1/8) = 8/3 h



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