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Q.
If 18 bindres bind 900 books in 10 days , How many binders will be required to bind 660 books in 12 days?
A.
22
B.
14
C.
13
D.
11
View Answer
Correct choice: D
Explanation:
Let the required no of binders be X. Less books , Less binders (Direct Proportion) More days, Less binders (Indirect proportion) Books 900:660} Days 12 : 10}⋮⋮ 18:x Therefore, (900 * 12 * x) = (660 * 10 * 18) => x = 11
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