A and B can do a piece of work in 72 days; B and C can do... — Answer & Explanation | PrepBeePakistan

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MEDIUMENGLISHMathematics

A and B can do a piece of work in 72 days; B and C can do it in 120 days; A and C can do it in 90 days. In what time can A alone do it ?

Correct answer: C

Explanation

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