Question
A local electronics store will sell seven AC adapters and two rechargeable flashlights for $86, or three AC adapters and four rechargeable flashlights for $84. What is the price of a single AC adapter and a single rechargeable flashlight?
Answers
Steve
7a+2f = 86
3a+4f = 84
a=8
f=15
3a+4f = 84
a=8
f=15