Question

The efficiency of P is 20% more than the efficiency of Q, and the efficiency of R is 80% of the efficiency of Q. If P starts with 5/4 of his efficiency along with Q, and after y days, P leaves the work, and R joins Q. The remaining work is completed by Q and R together in 3y days. From the information provided in the above question, which of the following can be determined?

  • A Find the value of y
  • B P and Q together can complete the work
  • C P, Q, and R together can complete 50% of the work
A Only A
B Only A and C
C Only B and C
D All A, B, and C
E Cannot be determined
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