Pencils, Pens and Exercise books in a shop are in the ratio of 10: 2 : 3. If there are 120 pencils, the number of exercise books in the shop is:  Pick:  A) 26  B) 36  C) 46  D) 56  E) 66
Explanation:   Let Pencils = 10x, Pens = 2x &amp; Exercise books = 3x. Now, 10x = 120 hence x = 12.   Number of exercise books = 3x = 36.   Answer: 36
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Pencils, Pens and Exercise books in a shop are in the ratio of 10: 2 : 3. If there are 120 pencils, the number of exercise books in the shop is: