Multiple choice

A can do half of a work whereas B complete the work in 1 day. B can do half work as C in 1 day. the ratio of their efficiencies of work is : A किसी कार्य को एक दिन में आधा कर सकता है जबकि B एक दिन में उस पूरा कार्य को कर सकता है C के एक दिन के कार्य को B एक दिन आधा में आधा कर सकता है | कार्य में उनकी दक्षता का अनुपात है -

  1. 2 : 1 : 4

  2. 1 : 2 : 4

  3. 2 : 4 : 1

  4. 4 : 2 : 1
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B Correct answer
Explanation

A completes half work in 1 day, so A's efficiency = 0.5 work/day. B completes full work in 1 day, so B's efficiency = 1 work/day. B does half of C's work in 1 day, meaning B's work = 1/2 of C's work in 1 day, so C's efficiency = 2 work/day. Ratio A:B:C = 0.5:1:2 = 1:2:4.

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