Question

Q.10) A can build a wall in 12 days while B can break it down in 6 days. A
has worked for 3 days and then B joined to work with A for another 2 days
only. In how many days will A alone build up the remaining part of the wall?
a) 22 days b) 10 days c) 11 days
d) 15 days e) None of these​

Answer 1

Answer:

D) 15 days is correct answer according to me.

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Hope my answer was helpful to you