A) 14
B) 13
C) 22
D) 11
Correct Answer: D
Solution :
[d] Let required number of binders be ?x? Less books, less binders (direct) More days, less binders (indirect) \[\left. \begin{matrix} Books & 900 & :660 \\ Days & 12 & :10 \\ \end{matrix} \right\}::18:x\] \[900\times 12\times x=660\times 10\times 18\] \[x=\frac{660\times 10\times 18}{900\times 12}=11\]You need to login to perform this action.
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