Varun alone can build a boundary wall in 24 days. He works on it for 8 days and leaves; Prakash then finishes the rest in 12 days. How many days would Prakash need to build the whole wall alone?

Question

Accepted Answer

18. In 8 days Varun does 8/24 = 1/3 of the wall. Prakash does the remaining 2/3 in 12 days, so the whole wall takes him 12 ÷ (2/3) = 18 days.

Varun alone can build a boundary wall in 24 days. He works on it for 8 days and leaves; Prakash then finishes the rest in 12 days. How many days would Prakash need to build the whole wall alone?

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