Question

- In how many years the interest on Rs. 1200/- at 5% is equal to the interest on Rs. 800/- at 7.5% in 2.5
years?​

Answer 1

Answer:

simple interest. interest rate is ... Find the rate percent and time, if both are numerically equal. 6\frac{1}{4}% p.a., 6 yrs 5 months.

Answer 2

Answer:

2.5 years

Interest on Rs 800 at 7.5% simple interest for 2.5 years = Interest on Rs 1200 at 5% simple interest for say 'n' number of years.

800 x  

7.5

100

x 2.5 = 1200 x  

5

100

x n

n = 800 x  

7.5

100

x 2.5 x  

1

1200

x  

100

5

n =  

150

60

= 2.5 years