# Ex.8.3 Q5 Compairing Quantities - NCERT Maths Class 7

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## Question

I buy a T.V. for $$\rm Rs\, 10,000$$ and sell it at a profit of $$20\%.$$ How much money do I get for it?

Video Solution
Comparing Quantities
Ex 8.3 | Question 5

## Text Solution

What is Known?

Cost price $$(\rm Rs\, 10,000)$$ of T.V. and profit on selling it $$(20\%).$$

What is Unknown?

The price at which TV was sold (selling price).

Reasoning:

In this question profit percent is given. Total profit can be calculated by multiplying cost price by profit percent and dividing by $$100$$. Selling price can be obtained by adding total profit to the cost price.

Steps:

Cost price of TV $$= 10000$$ and Profit percent $$= 20\%$$

Total profit

\begin{align}&= \frac{{{\rm{20}}}}{{{\rm{100}}}}{\rm{ \times 10000}}\\ &= \rm{Rs}{\rm{.2000}}\end{align}

So, selling price will be $$=$$ Cost price $$+$$ profit

Thus,

Selling price

$$=10000+2000=\text{Rs}\text{12000}$$

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