Rita bought a desktop computer and a laptop computer. before finance charges, the laptop cost $200 more than the desktop. she paid for the computers using two different financing plans. for the desktop the interest rate was 5% per year, and for the laptop it was 7% per year. the total finance charges for one year were $350. how much did each computer cost before finance charges?

desktop  cost $2433.33

laptop  cost $2633.33.  

Explanation:

Let x = desktop price

let y = laptop price  

from the information given in the question,  laptop price is 200 more than the desktop price.  

which mean, y = x + 200.  

R_1 =  Rate of interest on desktop.

R_2 =  Rate of interest on laptop.  

R_1 = 0.05 * x

R_2 = 0.07 * y  

The total finance charges for one year is 350.  

therefore

R_1 + R_2 = 350

0.05x + .07y = 350.  

since y = x + 200,

.05x + .07(x+200) = 306.  

.05x + .07x + 14 = 306  

0.12X = 292

X = $2433.33

We know that

since y = x + 200,

therefore y = $2633.33.  

desktop  cost $2433.33

laptop  cost $2633.33.  

answer; (inseparability);

since the options are not listed, when you are working on your budget you should also add water, tv, internet, miscellaneous and your 'fun' money for in your budget. when budgeting, you need to allow for fun money, and mis/accidental money so that you stick to the budget and not go crazy because you feel strapped to the budget.