5 buildings cost 11million. 9 buildings cost 15 million. What do 10 buildings cost? Discount rate is

Question:

5 buildings cost 11million. 9 buildings cost 15 million. What do 10 buildings cost? is 10%.
16m
17m
13m
28m
Discount Rate
Depending upon the context, the discount rate has two different definitions and usages. First, the discount rate refers to the interest rate charged to the commercial banks and other financial institutions for the loans they take from the Federal...