Homework Help: Math

Posted by Frank on Friday, January 18, 2013 at 7:19am.

On a Christmas package, Audrey needs to use only 40-cent stamps and 16-cent stamps. If she uses twice as many 40-cent stamps as 16-cent stamps, how many of each type of stamp must she use to mail a package costing $5.76 in postage?

Math - Reiny, Friday, January 18, 2013 at 9:43am
number of 16 cent stamps --- x
number of 40 cent stamps ---- 2x

16x + 40(2x) = 576
96x = 576
x = 6

.... state your consclusion

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