Math help!

Question

Maria bought a desktop computer and a laptop computer. Before finance charges, the laptop cost $350 more than the desktop. She paid for the computers using two different financing plans. For the desktop the interest rate was 7% per year, and for the laptop it was 6% per year. The total finance charges for one year were $398 .

How much did each computer cost before finance charges?

 

Desktop: $__

Laptop: $__

Answer 1

Momina, if we call the cost of the desktop d, then the laptop is d + 350, right?

 

We are given...

 

.07d + .06(d + 350) = 398

.07d + .06d + 21 = 398

.13d = 377

d = 2900

 

Sooo, the desktop price was $2900 and the laptop was 2900 + 350 = $3250.

 

Hope this helps!