Posted by Erik on Friday, January 18, 2013 at 6:25am.
On a Christmas package, Audrey needs to use only 40cent stamps and 16cent stamps. If she uses twice as many 40cent stamps as 16cent 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 10:14am
done when you posted as Cat