What is the rate percent when the simple interest on Rs.810 amount to Rs.155 in 4 Years? Choose the correct choice
A) 4.78	B) 4.68	C) 4.58	D) 4.48	E) 4.38

Rationale: "155 = ( 810 * 4 * r ) / 100 r = 4.78 % answer : a"
Answer: A