Answer:
$30
Explanation:
total investments in the economy are:
- $0 that yield an expected rate of return of 25% or more
- $15 that yield an expected rate of return of 20 - 25%
- $15 that yield an expected rate of return of 15 - 20%
- $15 that yield an expected rate of return of 10 - 15%
- $15 that yield an expected rate of return of 5 - 10%
- $15 that yield an expected rate of return of 0 - 5%
If the real interest rate is 15%, then only projects that will yield 15% or more will be carried out and those are worth $15 (yield expected rate of return of 20-25%) + $15 (yield expected rate of return of 15-20%) = $30