A math textbook is 1 1/4 in. thick. how much shelf space is needed for 30 copies of the book?
1 answer:
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Answer:
y
Step-by-step explanation:
8 nickels = 40 cents
y < 8
x < 35
Let's test
1 nickel and 35 pennies. That doesn't work
4 nickel and 20 pennies. That works. Perhaps we be more precise?
5 nickels and 15 pennies. Right on the point. 20 coins.
Hope this helps :)
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