Question: If 28 men finish a work in 15 days, 21 men finish the same work in
(A)24 days
(B) 14 days
(C) 15 days
(D)20 days
The proportion is indirect
Men Days
28 15
21 x
When proportion is indirect we multiply terms straight
21x=420
x=420รท21
x=20
The correct option is D
Discussed: If 28 men finish a work in 15 days, 21 men finish the same work in
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