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October 20, 2014

October 20, 2014

Posted by **help** on Thursday, March 7, 2013 at 5:44pm.

- math -
**Ms. Sue**, Thursday, March 7, 2013 at 5:46pmLet x = the number of chemistry textbooks.

x + 2x = 315

3x = 315

x = 105

- math -
**Dr. Jane**, Thursday, March 7, 2013 at 5:47pmp + c = 315

p =2c

Replace p with the 2c in the first equation.

2c + c = 315

solve for "c"

then you can find p.

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