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13-01-2017
Mathematics

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The total cost of four pens and seven mechanical pencils is $13.25. The cost of each pencil is 75 cents
a. Using an arithmetic approach, find the cost of a pen

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13-01-2017

0.75$
0.75$
0.75$
0.75$
0.75$
0.75$
0.75$
+
----------
5.25$

v

13.25$ - 5.25$ = 8.00$

Since there's 8.00$ left, and there's fours pens, 8 / 4 = 2.00$

A pen cost 2.00.

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