Question

A sum of money becomes five times at simple interest rate of
annum. At what rate percent will it become seven fold ?
(A) 6% (B) 10% (C) 12% (D) 14%
78
Class - 8​

Answer 1

Answer:

6%

Step-by-step explanation:

1------> 5 times

formula

(n-1)/time= rate/100

4/1=r/100 = 400

1------> 7(times)

6/1=400/100 =6%