Question

at what percent per annum will Rupees 6000 to amount Rupees 6615 in 2 years when interest is compounded annually . ​

Answer 1

Answer:

Ans = 5% p.a.

P = 6000

A = 6615

T = 2 years

C.I = 6615 - 6000

= 615

Rate = ?

then,

A = P(1+r/100)power n

6615 = 6000(1+r/100)power2

6615 / 6000 = ( 1+r/100 ) power 2

441/400 = ( 1+r/100) power 2

(21/20) power 2 = 1+r/100 power 2

Answer 2

Answer:

R=5%

Step-by-step explanation:

A= Rs6615

P = Rs 6000

T =2 years

R= ?

solution:

when the interest is compounded annually

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

6615=6000(100+R/100)²

6615/6000=(100+R/100)²

441/400=(100+R/100)²

√441/400=100+R/100

21/20=100+R/100

21×100=20(100+R)

2100=2000+20R

2100-2000=20R

100=20R

100/20=R

R=5%p.a

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