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  1. If 18 binders bind 900 books in 10 days, How many binders will be required to bind 660 books in 12 days?
    1. 21
    2. 14
    3. 18
    4. 11
Correct Option: D

According to given question,
Since 900 books are bonded in 10 days by 18 binders.
1 books are bonded in 10 days by 18 / 900 binders.
1 books are bonded in 1 days by 18 x 10 / 900 binders.
660 books are bonded in 1 days by 18 x 10 x 660 / 900 binders.
660 books are bonded in 12 days by 18 x 10 x 660 / 12 x 900 binders.
660 books are bonded in 12 days by 18 x 10 x 55 / 900 binders.
660 books are bonded in 12 days by 18 x 55 / 90 binders.
660 books are bonded in 12 days by 55 / 5 binders.
660 books are bonded in 12 days by 11 binders.



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