Pencils, pens and exercise books in a shop are in the ratio 10:2:3. If there are 120 pencils, the number of exercise books in the shop is?

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Solution

The correct option is B
36

Let pencils = 10x, pens = 2x & exercise books = 3x. Now, 10x = 120, hence x = 12.
Number of exercise books = 3x = 36.

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