Answer:
6.43%
Explanation:
The internal rate of return shall be determined by the Insurance firm using the following mentioned method:
Cash flows Year involved Present value@10% Present value@3%
($100) 1-20 ($851) ($1,487.75)
$3,310 20 $492 $1,832.67
($359) $344.92
IRR=A%+ (a/a-b)*(B%-A%)
A%=10% a= ($359) B%=3% b=$344.92
IRR=10%+(-$359/-$359-$344.92)*(3%-10%)
=6.43%