belferfex
25.01.2020 •
Mathematics
Hardcover books cost $8 and paperbacks cost $3. john buys 15 books for $70. how many of each book type did he buy?
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Ответ:
10 paperback and 5 hardcover books
Step-by-step explanation:
Please see attached picture for full solution.
Let's check:
total cost= 10(3) + 5(8)= $70 ✓
You could also try to solve the question by assuming John bought all paperback books first instead of all hardcover books. The answer should be the same.
Ответ:
Its 6
Step-by-step explanation: