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OpenStudy (anonymous):
At the convenience store 7 pencils cost $1.47. How much does it cost to buy 70 pencils?
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OpenStudy (anonymous):
14.7$
OpenStudy (mathstudent55):
Here are two ways of doing this problem. 1) Since 70 is 10 times 7, the price of 70 pencils is 10 times the price of 7 pencils. Multiply $1.47 by 10. 2) Since 7 pencils cost $1.47, you can find the price of 1 pencil by dividing $1.47/7. Then to find the price of 70 pencils, multiply the price of one pencil by 70.
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