ndochoa ndochoa
  • 15-07-2018
  • Mathematics
contestada

A bookstore had 45 copies of a magazine. Yesterday, it sold 2/3 of them. Today, it sold 1/3 of what remained. How many copies does the bookstore have left?

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 15-07-2018

After the first day, 1/3 of the original amount remained:

... (1/3)·45 = 15


After the second day, 2/3 of that amount remained:

... (2/3)·15 = 10


The bookstore has 10 copies left.

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