Simple interest on a certain sum is 16 over 25 of the sum. Find the rate per cent and time, if both are equal.
Choose the correct option:	A) 8% and 8 years	B) 6% and 6 years	C) 10% and 10 years	D) 12 % and 12 years	E) None of these
16⁄25P = P×R×R/100   ⇒ R2 = 1600⁄25 ⇒ R = 40⁄5 = 8%   8% and 8 yearslso, time = 8 years   8% and 8 yearsnswer 8% and 8 years
<result>A</result>
Simple interest on a certain sum is 16 over 25 of the sum. Find the rate per cent and time, if both are equal.