Math Question write a linear equation or inequality in 1 variable. Then solve the equation or inequality to answer the question..

Question

You invested $20,000 in two accounts. One account pays an annual interest rate of 6% and the second account pays an annual interest rate of 7.5%. How much did you invest in each account if the total interest earned for the year was $1440?

Answer 1

I will set this up for you and tell you how to solve it, but I will leave the arithmetic to you.

x=amt at 6%

y=amt at 7.5%

x + y = 20000

.06x + .075y = 1440

Multiply the first equation by 60 to get equation 3 and the 2nd equation by 1000,to get equation 4

Then subtract equation 4 from equation 3.

You solve it from there.