The simple interest on a sum of money is of the principal. Find the rate percent and time, if both are 9 numerically equal. (S.S.C., 2000) 4x
Answer
Answer (as printed):
Explanation
Let sum = ` x. Then, S.I. = ` . 9 Let rate = R% and time = R years. x × R × R 4x 2 400 20 2 Then, 100 = 9 or R = 9 or R = 3 = 6 3 . 2 2 ∴ Rate = 6 % and Time = 6 yrs = 6 yrs 8 months. 3 3 1
Explanation as extracted from the printed page; notation may be imperfect.