Answer:
Explanation:
45 copies and sold 2/3= 30 sold so 15 left
15 copies and sold 2/5= 6 sold so 9 left
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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