Daisy went to an electronics store and paid $78.99 per GPS navigator for five GPS navigators and a flat rate fee for installation for a total of $428.45. Rebecca went to another electronics store and paid $85.49 per GPS navigator for five GPS navigators plus a per GPS navigator installation fee for a total of $464.35. What is the difference in the amounts they paid in installation charges?

Respuesta :

1. GPS for                  2. GPS for                         464.35
428.45/5 is                    464.35/5 is                  -  428.45
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                                                                               35.90