If 18 binders bind 900 books in 10 days how many binders will be required to bind 660 books in 12 da...........

Quant (SSC) Time and work

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If 18 binders bind 900 books in 10 days, how many binders will be required to bind 660 books in 12 days?

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Explanation:

To solve this question, we can apply a short trick approach
M₁D₁W₂ = M₂D₂W₁
Given,
M₁ = 18, D₁ = 10 days, W₁ = 900, M₂ = ?, D₂ = 12 days, W₂ = 660
By the short trick approach, we get
18 × 10 × 660 = M₂× 12 × 900
∴ M₂ = 660 × 10 × 18 / 900 x 12 = 11 binders