Multiple choice

A can do a piece of work in 27 days. If B is 50% more efficient than A; then how many days does B require to do the same work? A एक कार्य को 27 दिन में कर सकता है, यदि A से B 50% अधिक कार्य कुशल है, तो उसी कार्य को करने के लिए B को कितने दिनों की आवश्यकता होगी?

  1. 12

  2. 15

  3. 16

  4. 18
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

If A does work in 27 days, A's 1 day work = 1/27. B is 50% more efficient, so B's 1 day work = 1.5 × (1/27) = 1/18. Therefore B completes the work in 18 days. Option B (15) is a trap — 50% less time would be 13.5 days, not 50% more efficient.

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