Question

in what time will rs 900amountrs 1080 at 4%per annum simple interest

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Answer 1

$\sf \red to \: \sf \red find :$

In what time will Rs. 900 amount to Rs.1080 at 4% per annum simple interest?

$\rm \pink{ principal = Rs. 900}$

We ,know that it will amount to Rs.1080.

since, simple Interest=Amount-principal

$\implies1080 - 900 = \red{180}$

$\sf \: S.I = Rs.180$

Rate of interest:4% per annum

$\sf \color{lime} \:we \: knew \: simple \: interest = \\ \sf \frac{P×R×T}{100}$

$\rm \blue{180 = \frac{900 \times 4 \times T}{100} }$

$= \sf36T$

$\sf36T = 180$

36×5=180

$\tt \: T=5$

So in 5 years the sum of Rs. 900 will amount to Rs. 1080.

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Answer 2

To find :

In what time will Rs. 900 amount to Rs.1080 at 4% per annum simple interest?

principal = Rs.900

We ,know that it will amount to Rs.1080.

since, simple Interest=Amount-principal

⟹ 1080 − 900 = 180

S.I = Rs.180

Rate of interest:4% per annum

we knew simple interest

$\frac{p \times r \times t}{100}$

$180= \: \frac{900 \times 4 \times \: t }{100}$

=36T

$\sf36T = 18036T=180$

36×5=180

$\tt \: T=5T=5$

So in 5 years the sum of Rs. 900 will amount to

Rs. 1080.

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By = WaterPricecess