Question

a certain sum of money amount to rupees 4800 in 4 years and 5200 in 6 years find the sum and the rate of simple interest​

Answer 1

The rate of interest $= 5 \%$

Explanation:

A sum becomes 4800 in 4 years  

Same sum becomes 5200 in 6 years

Difference between above value will be a interest for two year  

So, $5200 - 4800 = 400$

For four years interest is $= 800$

Hence, the sum will be $= 4800 - 800 = 4000$

  The rate of interest $= \frac{800}{4000\times 4} \%$

The rate of interest $= 5 \%$ .

Answer 2

Answer:

5%

Step-by-step explanation:

6=5200

4=4800

( 5200-4800)

= 400

(400×2=800)

(4800-800)

=4000

(800/4000)

5%