Question

4. Find the rate of compound interest on
(i) Rs 6,500 so that it can amount to Rs 7,865 in 2 years​

Answer 1

Answer:

Step-by-step explanation:

Answer:

1. rate of interest is 10% p.a.

2.rate of interest is 5% p.a.

Step-by-step explanation:

1.

p =6500

a=7865

n=2yrs

7865 = 6500(1+r/100)²

1573 = 1300(1+r/100)²

121 = 100(1+r/100)²

121/100 = (1+r/100)²

√121/100 = 1+r/100

11/10 =100+r/100

11 = 100+r/10

110 = 100+r

110-100 = r

10 = r

2.

p= 4000

a= 4360.50

n=3yrs

4630.50 = 4000(1+r/100)³

1157.625 = 1000(1+r/100)³

1157.625/1000 = (1+r/100)³

∛1157.625/1000 = 1+r/100

10.5/10 =1+r/100

10.5 = 100+r/10

105 = 100+r

105-100 = r

5 = r

Answer 2

Answer:

. I think 1 ans is 13000 and 2 is 15730