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A can do half of a piece of work in 1...

This question belongs to Arithmetic Ability Time And Work
Time and Work
?

A can do half of a piece of work in 1 day,where B can do full. B can do half the work as C in 1 day. The ratio of their efficiencies of work is = ?

Answer & Solution
Correct Answer: Option A
A : B = 1 : 2
B : C = 1 : 2 (Multiply by 2)
B : C = 2 : 4
A : B : C = 1 : 2 : 4
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