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jaqwannewsome
04.12.2019 •
Mathematics
After spending 1/4 of his allowance on a book and 1/3 of the remainder on stationery, john has $18 left. find the cost of the book.
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Ответ:
This problem is tricky. Let's break it down.
1/4 - book
1/3 of the remainder(3/4) - stationery
"OF" MEANS MULTIPLY
1/3 x 3/4 = 1/4
So, 1/4 of total allowance on stationery.
Meaning, he spent 1/2 of his allowance in all, and 1/2 of his allowance is $18.
Since the book cost 1/4 of his allowance, and (1/4)2 = 1/2, the book cost 18/2 = $9.
Ответ:
hhh
Step-by-step explanation: