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January 25, 2015

January 25, 2015

Posted by **Tony** on Sunday, October 27, 2013 at 5:53pm.

- math -
**Kuai**, Sunday, October 27, 2013 at 6:13pmstaples = s

chalk = c

c + 2s = 10

3c + 2s = 18

-c-2s = -10

3c + 2s = 18

2c = 8

c = 4

s = 3

c + s

4 + 3 = 7

The total cost $7.

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