# Ex.2.3 Q7 fractions-and-decimals Solutions-Ncert Maths Class 7

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## Question

A car runs $$16 \rm \,km$$ using $$1$$ liter of petrol. How much distance will it cover using \begin{align} 2\frac{3}{4}\end{align} liters of petrol?

Video Solution
Fractions And Decimals
Ex 2.3 | Question 7

## Text Solution

What is known?

A car runs $$16 \rm{km}$$ using $$1$$ liter of petrol.

What is unknown?

How much distance car can in \begin{align}2\frac{3}{4}\end{align}  liters of petrol.

Reasoning:

By using Unitary Method we can simply multiply  \begin{align}2\frac{3}{4}\end{align} by $$16$$ to get how much distance will car cover in  \begin{align}2\frac{3}{4}\end{align} liters.

Steps:

Distance covered by the car using $$1$$ liter of petrol $$= 16 \rm \,km$$

Distance covered by using \begin{align} \left( {2\frac{3}{4} = \frac{{11}}{4}{\rm\,{ liter }}} \right)\end{align} of petrol

\begin{align} &=\frac{{16}}{1} \times \frac{{11}}{4}\\&= 44\rm \, km\end{align}

Thus, $$44\rm \, km$$ distance covered by car using \begin{align} 2\frac{3}{4}\end{align} liters of petrol.

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