The thickness of a science book is 20mm & that of a mathematics book is 28mm. Books of each type are stacked up in two separate piles. a. What will be the minimum height of each pile such that both piles are of the same height? b. Find the number of books in each pile.
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Given : The thickness of a science book is 20mm & that of a mathematics book is 28mm
Books of each type are stacked up in two separate piles
To Find : a. What will be the minimum height of each pile such that both piles are of the same height?
b. Find the number of books in each pile.
Solution:
We need to Find LCM of 20 & 28
20 = 2 * 2 * 5
28 = 2 * 2 * 7
LCM = 2 * 2 * 5 * 7 = 140
140 mm is the minimum height of piles
Book of thickness 20 mm = 140/20 = 7
Book of thickness 28 mm = 140/28 = 5
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