Multiple choice

Passage

Directions: Read the data carefully and answer the following question. David, John, Mike, and Sam are four workers who together can complete a project 'P' in 9 days and Sam did the one fifth of the project P. The efficiency of David is five times that of Mike, while John's efficiency is 100% more than that of Mike. Also, Mike and David working together can complete the project 'P' in p days, while Mike and Sam working together can complete the project 'P' in y days.

Two workers R and T together can complete an another project 'Q' in (p - 1) days, while T and N together can complete the same work in (y - 18) days. If R, T, and N together can complete project 'Q' in 8 ( p − 1 ) y − 16 days, how much percent is N more efficient as compared to R?

  1. 14 2 7 %

  2. 15%

  3. 25%

  4. 28 4 7 %

  5. 38 3 7 %
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D Correct answer

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