What is the interest rate in% that makes the following cash flows (A = B) economically equivalent?

a) 7,238

b) 1,072

c) 1,250

d) 12,333
 

A B 0 $100 1 $100 2 $100 2 3 $115 3 A B 0 $100 1 $100 2 $100 2 3 $115 3