Question

Sara buys calculator for rupees 450 and sells it for 540 find the gain and gain percent​

Answer 1

$\huge\bf\underline{\underline{Given:}}$

Cost Price of Calculator = Rs.450

Selling Price of Calculator = Rs.540

$\huge\bf\underline{\underline{To\:Find:}}$

Gain and Gain percentage

$\huge\bf\underline{\underline{Solution:}}$

Here, selling price is greater than the cost price.

Hence,there is gain.

$\sf\boxed{\red{Gain=Selling\:Price-Cost\:Price}}$

Gain = 540 - 450

$\bf\boxed{\green{Gain = Rs.90}}$

Now,we need to find gain percentage.

$\bf\boxed{\red{Gain\:percent=\frac{Profit \times 100}{Cost \: Price}}}$

$\sf{Gain\:Percent= \frac{90 \times 100}{450}}$

$\sf{Gain\:Percent = \frac{100}{5}}$

$\bf\boxed{\green{Gain\:Percent= 20\%}}$

Therefore,there is a gain of Rs.90 and the gain percentage is 20%.

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@ItsMysteriousGirl