Question

if rs. 900 amounts to rs 1080 in 4 yrs at simple interest what sum will amount to rs 1275 in 5 yrs at the same rate?

Answer 1

Hope this helps you out!!!!

Answer 2

Answer:

Principal value is Rs.1020.

Step-by-step explanation:

Given : If Rs.900 amounts to Rs.1080 in 4 yrs at simple interest.

To find : What sum will amount to rs 1275 in 5 yrs at the same rate?

Solution :

Principle =Rs.900

Amount = Rs.1080

Interest = Amount - Principal

Interest = 1080-900

Interest = Rs.180

Now, Time =4 years and SI=Rs.180

$SI=\frac{P\times R\times T}{100}$

$180=\frac{900\times R\times 4}{100}$

$R=\frac{180}{9\times 4}$

$R=5\%$

Now, Rate = 5%

Amount = Rs.1275

Time = 5 years

Interest= Amount - principal

Interest= 1275 - p

$SI=\frac{P\times R\times T}{100}$

$1275-p=\frac{p\times 5\times 5}{100}$

$127500-100p=25p$

$125p=127500$

$p=\frac{127500}{125}$

$p=1020$

Therefore, Principal value is Rs.1020.