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21-03-2016
Mathematics

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A bookstore had 90 copies of a magazine. Yesterday, it sold 1 over 6 of them. Today, it sold 1 over 3 of what remained. How many copies does the bookstore have left?

Respuesta :

21-03-2016

90 total

[tex] \frac{1}{6} [/tex] of 90 (15) sold yesterday.

90 - 15 = 75 remaining.

[tex] \frac{1}{3} [/tex] of 75 (25) sold today.

75 - 25 = 50 copies remaining.

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