Question

the simple interest on a certain sum of money for three years is rupees 1080 and the compound interest on the same sum at the same rate for 2 years is 741.60 find the rate of interest and the principal​

Answer 1

Step-by-step explanation:

ok...thik about it..done yr

Answer 2

Answer:

6% and 6000

Step-by-step explanation:

It is given that

SI for 3 years = 1080

SI for 2 years = (1080×2)/3=720

CI for 2 years = 741.60

So the difference = 741.60−720=21.60

Here 21.60 is the SI on 720/2 = 360 for one year

(i) We know that

Rate = (SI×100)/(P×t)

Substituting the values

= (21.60×100)/(360×1)

Multiply and divide by 100

=(2160×100)/(100×360×1)

= 6%

1080 is SI for 3 years at the rate of 6% p.a.

So the principal =(SI×100)/(r×t)

Substituting the values

=(1080×100)/(6×3)

= 6000