Question

if the amount is 2 (1/4) times the sum after 2 years at compind interest find the rate of interest per annum .



pls tell me answer ​

Answer 1

Answer:

50 percent

Step-by-step explanation:

Interest is compounded annually,

So amount, A=P(1+

100

r

)

t

Where P is Principal (or sum)

t is time (in years)

A is the amount, person will get after time t

and r is rate of interest per annum

Here A=2

4

1

P=

4

9

P

and t=2 years

Now apply the formula,

A=P(1+

100

r

)

t

4

9

P=P(1+

100

r

)

2

⇒

4

9

=(1+

100

r

)

2

Square root both sides,

2

3

=(1+

100

r

)

100

r

=

2

3

−1=

2

1

r=

2

100

=50%

Answer 2

Answer:

50 percent

Step-by-step explanation:

hello (I am yogendra kanwar)