Question

In what time will Rs. 6600 amount to Rs. 7200 at 8% per annum​

Answer 1

Given,

Amount = 7200

Principal = 6600

SI = A - P

=> 7200-6600

=> 600

Rate = 8%

Time = SI × 100 / P × R

=> 600×100/6600×8

=> 60000/52800

=> 600/528

=> 1.13 years

TIME = 1.13 year

Answer 2

$\underline{\bold{Given\:in\:the\:question}}$

Amount = Rs.7200

Principle = Rs.6600.

Rate = 8% p.a.

$\boxed{\bold{SI = Amount - Principal}}$

= Rs.7200 - Rs.6600

= Rs.600

$\underline{\bold{To\:Find}}$

Time = ??

$\bold{we\:know\:that}$

$\boxed{\bold{SI = \dfrac{P\times R\times T}{100}}}$

$\bold{according\:to\:the\:question}$

Let the time be T.

$\implies{600 = \dfrac{6600\times 8\times T}{100}}$

$\implies{600 = 66\times 8\times T}$

$\implies{600 = 528\times T}$

$\implies{\dfrac{600}{528} = T}$

After cancelling....

$\implies{\dfrac{25}{22} = T.}$

$\implies{1.13 = T}$

So the time is 1.13 years