Multiple choice

P is thrice as good a workman as Q together. They together can do a job in 16 days, In how many days will Q finish the work?

  1. 56 days

  2. 48 days

  3. 64 days

  4. 72 days

  5. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Let Q's efficiency = 1 unit/day. Then P's efficiency = 3 units/day. Combined efficiency = 4 units/day. Together they complete work in 16 days, so total work = 4 * 16 = 64 units. Q alone would take 64/1 = 64 days. Option C is correct.

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