Simple Interest Q42

42.	What will be the ratio of simple interest earned by certain amount at the same rate of interest for 6 years and that for 9 years?
	A. 1 : 3 B. 1 : 4 C. 2 : 3 D. Data inadequate E. None of these

Answer: Option C

Explanation:

Let the principal be P and rate of interest be R%.

Required ratio =	P x R x 6 100	=	6PR	=	6	= 2 : 3.
	P x R x 9 100		9PR		9