Problema Solution
Lisa invests $4,000 in two types of bonds: X, which offers a 10% return, and Y, which offers a 6% return. If the combined return on the investment is $300, how much did Lisa invest at the rate of 6%?
$3,000
$2,500
$1,500
$500
Answer provided by our tutors
Let
x = the amount invested in bond X
y = the amount invested in bind Y
x + y = 4000
0.10x + 0.06y = 300
........
click here to see the system of equations solved for x and y
........
x = $1,500
y = $2,500
Lisa invested $2,500 at the rate of 6%.