Question

4. 15,000 is deposited at simple interest. If the amount after 8 years is 25,800, find the rate of interest. (2013) @ (A) 5 % (B) 9% (C) 10% (D) 11%​

Answer 1

Step-by-step explanation:

The simple interest to the sum Rs. 15,000 for 2 years at a rate of interest 5% per annum is

S.I.=

100

PRT

⇒

100

15,000×2×5

=1,500.

The interest will be Rs. 1,500

and the amount at the end of 2 years.

=P+I=15000+1500= Rs. 16,500

Answer 2

Answer:

The rate of interest is 9%.

Step-by-step explanation:

Principle (P)= ₹15000

Time (T)= 8 years

Amount = ₹25800

Amount = Principle + Total interest

25800 = 15000 + I

I = 25800-15000

= 10800

S.I =( P × R × T ) (Let the rate of interest be 'r')

10800 = (15000×r×8)/100

10800 = 1200r

r = 10800/1200

r= 9 %

Hence, The rate of interest is 9%.

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