Juan bought a desktop computer and a laptop computer. before finance charges, the laptop costs $300 more than the desktop. he paid for the computers using two different financing plans. for the desktop the interest rate was 6% per year, and for the laptop it was 7% per year. the total finance charges for one year were $398. how much did each computer cost before finance charges?

The cost of each computer before finance is:

Desktop: $2900.00,  Laptop: $3200.00

Step-by-step explanation:

Lets say the cost of Desktop is 'D' dollars.

The cost of laptop is dollars.

Total finance charge for 1 year is given by:

Solving for D we get:

.......(equation 1)

Now the cost of laptop is D+300:

So before finance, the cost of desktop was $2900.00 and the cost of laptop was $3200.00.

P.S: You can check if your calculation is correct by plugging the values of the cost of laptop and desktop in the equation 1.

set each factor equal to 0

4x-3 = 0

2x-1 = 0

solve for x.

4x-3=0

4x=3

x= 3/4

solve for x. 

2x-1= 0

2x= 1

x= 1/2

eventually after a few more steps, your answer should be 1/2 is less than or equal to x and 3/4 is greater than or equal to x

do your own work and don"t cheat.

step-by-step explanation: