Answer:
11.10%
Step-by-step explanation:
The computation of the X is shown below;
The first equation is
$90,000 ÷ ( 1 + interest rate)^3 + X ÷ (1 + interest rate)^5 = $200,000 ÷ (1 + interest rate)^4
$90,000 × (1 + interest rate)^2 + X = $200,000 × (1 + interest rate)..........(I)
As we are assuming company has invested in both the bonds
So,
The second equation is
$90,000 (1 + interest rate)^2 = X ...................................(2)
By considering the both equation
we can derive that
X = $100,000 × (1 + interest rate)
Now the (1 + interest rate) is
= $100,000 ÷ $90,000
= 11.10%