Question 302597
Shaun invests $4000 at 4% interest per year.
How much additional money must he invest at 5.5% interest per year to ensure that the interest he recieves each year is 4.5% of the total amount invested?

$4000 @ 4%

$x @ 5.5%

Interest received = 4.5%(x+4000)

0.04 *4000 + 0.055x = 0.045x+ 180

160.00+0.055x -0.045x =180

0.01x=20

x= 20 / 0.01

x=2000

He has to invest $ 2000 At 5.5%