Question

If rs 4000 amounts to rs5440 in 3 years , how much will rs9200 amount to in 5 years at the same rate of simple interest per annum?

Answer 1

Answer:

The total amount is 14720 Rs.

Given:

If Rs. 4000 amounts to Rs.5440 in 3 years

To find:

How much will Rs.9200 amount to in 5 years at the same rate of simple interest per annum

Solution :

Principal = 4000, n = 3,

SI $= \frac{P \times n \times r}{100}$

5440 - 4000 = $\frac{4000 \times 3 \times r}{100}$

1440 = $\frac{4000 \times 3 \times r}{100}$

1440 $\times$ 100 = 12000 $\times$ r

r =$\frac{1440 \times 100}{12000}$

r = 12%

SI = $\frac{P \times n\times r}{100}$

$= \frac{9200 \times 5 \times 12}{100}$

$= \frac{9200\times 60}{100}$

Interest = 5520

Total amount = 5520 + 9200 = 14720 Rs.