What is the rate percent when the simple interest on Rs.720 amount to Rs.180 in 4 Years?
Choose the correct choice from the following:
A) 6.25
B) 7.25
C) 8.25
D) 9.25
E) 10.25

Rationale: "180 = ( 720 * 4 * r ) / 100 r = 6.25 % answer : a"
Answer: A