Question

9. John purchased a black and white TV set on credit. If the set costs 32,400 and the
shopkeeper charges interest at the rate of 20% per annum, find the compound
interest that John will have to pay after 3 years.​

Answer 1

QUESTION:

John purchased a black and white TV set on credit. If the set costs 32,400 and the

shopkeeper charges interest at the rate of 20% per annum, find the compound interest that John will have to pay after 3 years.

ANSWER:

STEP BY STEP EXPLANATION:

P=32,400

R=20%

T=3years

A/Q

CI=PRT/100

CI=32,400x20x1/100

CI=6,480...........................of 1st year

CI=PRT/100

CI=38,880x20x1/100

CI=7,776............................of 2nd year

CI=PRT/100

CI=46,656x20x1/100

CI=9,331.2..........................of 2nd year

55,987.2

$\LARGE{ \underline{\underline{ \pink{ \bf{Required \: answer:}}}}}$

So, John has to pay ₹55,987.2