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12-09-2017
Mathematics

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Ralph sold brownies for $0.99 a piece in order to earn money for baseball cards. If the cards cost $1.35 per pack, and if Ralph had no money left over after buying them, what is the least number of brownies he must have sold

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12-09-2017

Least common multiple of 0.99 and 1.35
99 = 3 x 3 x 11
135 = 3 x 3 x 3 x 5

LCM = 3 x 3 x 3 x 5 x 11 = 1485.
Thus LCM of 0.99 and 1.35 = 14.85

Therefore, the least number of brownies he must have sold = 14.85/0.99 = 15.

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