Question

Calculate the intrest and the amount in the following:
Princepal:6500,Rate:7.5%,Time:4years​

Answer 1

simple interest =ptr/100

Step-by-step explanation:

so according to give information

p=6500

r=7.5

t=4

so by substituting values

6500×4×7.5/100

on cancelling we get

19500

Answer 2

Step-by-step explanation:

Simple Interest - p x r/100 x t

principal - 6500 (p)

rate - 7.5% ( r)

time - 4 years (t)

therefore interest= 6500x7.5% x 4

= 1950

so Amount = principal+ interest

hence (6500+1950)

= 8450

in case of

compound interest

{Formula}

Amount = p(1+r/100)^t

= 6500 (1+7.5%)^4

= 6500( 1+ 0.075)^4

= 6500(1.075)^4

= 65000 X 1.075 X 1.075 X 1.075 x 1.075

= 8680.54 (approximately)

hence the interest in case of compound interest

= ( Amount- principal)

= (8680.54 - 6500)

= 2180.54 as interest