Answer:
1) payment of $ 78,867.70
2) payment of $ 62,614.11
3) 7 years
4) rate of 12%
Step-by-step explanation:
On the first and second point we need to solve for the PMT:
PV $250,000.00
time 4
rate 0.1
C $ 78,867.701
PV $250,000.00
time 5
rate 0.08
C $ 62,614.114
In the third one we need to solve for time:
C $51,351.00
time n
rate 0.1
PV $250,000.0000
we work to reach this expression:

ANd we acn use logarithmics properties to solve for n
[tex]-n= \frac{log0.51315456368912}{log(1+0.1)
-n = -7.000072677
n = 7 years
Lastly, on the fourth, we need to solve for the rate, which is done using excel if we want an exact result and save time.
we list each value.
-250,000
104, 087
104, 087
104, 087
And calculate IRR by selecting this values.
12.0%