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A can write 75 pages in 25 hours A and B...

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

A can write 75 pages in 25 hours. A and B together can write 135 pages in 27 hours. In what time can B write 42 pages ?

Answer & Solution
Correct Answer: Option C
Time and Work mcq solution image
B's efficiency
= (A + B)'s efficiency - A's efficiency
= 5 - 3
= 2 pages/hour
B's time
2 pages in 1 hour
42 pages in 21 hours
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