Problema Solution
Kala 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?
Answer provided by our tutors
let
x = the cost of the desktop before the finance charges, x>0
x + 350 = the cost of the laptop before the finance charges
0.07x + 0.06(x + 350) = 398
by solving the above system of equations we find:
x = $2,900
click here to see the step by step solution of the equation:
x + 350 = 2,900 + 350 = $3,250
The cost of the desktop before the finance charges was $2,900.
The cost of the laptop before the finance charges was $3,250.