Answer:
Step-by-step explanation:
You can solve this using a financial calculator. I'm using TI BA II plus ;
N = 40*12 = 480 months
PV = -10,000
PMT = -400
FV = 3,350,000
then CPT I/Y = 0.856% (this is a monthly rate)
Next, to find the APR, multiply monthly rate by 12;
APR = 0.856% *12 = 10.275%
To "enter percentages as decimals and round to 4 decimals", APR =0.1028