Question

at what time the sum of rupees 8000 becomes rupees 9261. At the rate of 10% per annum. it the interest is compounded semi annual​

Answer 1

Answer:

Step-by-step explanation:

P=8000

A=9261

R=10%

T=?

(A/Q- Interest compounded semi-annually)

A=P(1+R/200)^2T

9261 = 8000 (1+10/200)^2T

9261/8000 = (21/20)^2T

(21/20)^3 = (21/20)^2T

==> 2T = 3

T= 3/2

ANSWER :- 1 & 1/2 yrs.

or 18 months.

Answer 2

let,

P = 8000

R-=10%

T=?

So,

CI=P[1+5/2]t]-1

CI=8ooo[21/20]t]-1

(8ooo/9261)=(21/20) 3

= 3 year

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