Question

WORD PROBLEM: 2 variable & 2 equations... Let D = Desktop & Let L = Laptop.
" Mary bought two computers, one desktop and one laptop. Before finance charges, the laptop cost $1500 less than the desktop. Mary 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 10% per year. The total finance charges for one year were $487.50. How much did the desktop computer cost before finance charges?

Answer 1

"Before finance charges, the laptop cost $1500 less than the desktop."

This is your first equation.

"For the desktop the interest rate was 7% per year, and for the laptop it was 10% per year. The total finance charges for one year were $487.50."

This is your second equation.

Keep everything in units of dollars, and you can solve the system.

Answer 2

Show me what you think one or both equations could look like.

Answer 3

Eq1: L = D-$1500

Eq2: .07D + .10L = $487.50

Answer 4

Is this correct?

Answer 5

That looks great. I think you'll have no problem solving from here. :-)

Answer 6

Im trying to solve it now

Answer 7

OK. I got D = $3750 and L = $2250

Answer 8

Same here. Those are some expensive computers! I guess they're really good. ;-)

Answer 9

Yes I know. I have one more word problem I'm going to put up. I have a really hard time with wordy word problems because they confuse me. I greatly appreciate your help. By the way, how good are you with English?