Question

Q.15. At what rate percent per annum the sum of rupees 2400 amount to rupees 4147.20 compounded annually for 3 years?​

Answer 1

Answer:

10 %

Step-by-step explanation:

From the given statement

Principal,P =T 240o0

Amount, A =T 4147.20

Time period, n = 3 years

Using the formula,

A P(1+ R/100)

4147.20 2400 (1 +R/100

4147.20/2400 (1+R/100)

172.8/100 = (1 +R/100)

1.728 (1+R/100)

(1 +R/100) = *V1728

1+ R/100 = 1.2

R/100 1.2 -1

R/100 0.2

R 0.2 x 100

R 20 %

Rate percent per annum, R = 20%

Hence, the rate percent per annum is 20

o.

Answer 2

so the answer is 20

thank you.