Reena took a loan of $. 1200 with simple interest for as many years as the rate of interest. If she paid $ 432 as interest at the end of the loan period, what was the rate of interest?
Pick one:
A) 3.6
B) 6
C) 18
D) Cannot be determined
E) None of these
Let rate = R% and time = R years.   Then,1200 x R x R/100= 432   12R2 = 432   R2 = 36   R = 6.   Answer:6
<result>B</result>
Reena took a loan of $. 1200 with simple interest for as many years as the rate of interest. If she paid $ 432 as interest at the end of the loan period, what was the rate of interest?