Question

plz solve:
rupees 12,000 is invested for 1½ years at compound interest. If rupees 15,972 is received at the end of this period find the rate of interest per annum.

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Answer 1

Answer:

R = 21%

Step-by-step explanation:

A= P(1+R/100)^t

15972 = 12000(1+R/100)^3/2

1331/1000 = (1+R/100)^3/2

1+R/100= (1331/1000)2/3

1+R/100 = [(11/10)^3]^2/3

1+R/100= (11/10)^2

1+R/100= 121/100

R/100= 121/100-1

R/100= 21/100

R= 21%

Answer 2

Answer:

.)

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