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March 30, 2015

March 30, 2015

Posted by **Cat** on Friday, January 18, 2013 at 1:57am.

- Math -
**PsyDAG**, Friday, January 18, 2013 at 12:23pmLet x = .16 stamps and y = .40 stamps.

y = 2x

.16x + .40y = 5.76

Substitute 2x for y in second equation and solve for x. Insert that value into the first equation and solve for y. Check by inserting both values into the second equation.

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