Question

If 20 litre oil is filled up into 4 jars, then what is the capacity of 7 such jars?

Answer 1

Hint: We will calculate the capacity of each jar by the formula:
Capacity of each jar = (capacity of jars) / total number of jars.
Then, for the capacity of 7 jars, we will multiply the capacity of each jar by 7. This way we will calculate the capacity of 7 jars.

Complete step-by-step answer:
We are given that the capacity of 4 jars containing oil is 20 litres.
We need to find the capacity of 7 such (identical) jars.
For this, we will first calculate the individual capacity of each jar.
The formula to find the capacity of each jar is given by:
Capacity of each jar = (capacity of jars) / total number of jars
$\Rightarrow$capacity of each jar = ${\displaystyle \frac{20}{4}}=5$litres
Now, for calculating the capacity of 7 jars, we will multiply the capacity of each jar by 7.
$\Rightarrow$capacity of 7 jars = 5$\times$7 litres = 35 litres.
Therefore, the capacity of 7 jars is calculated as 35 litres.

Note: In such questions, you may face difficulty while calculating the individual capacities of any article. You may go wrong with the formula of calculation of capacities of multiple identical articles.
In mathematics, capacity is defined as the amount that any particular item can hold. It is equivalent to the volume of any item or article. It is generally measured in millimetres (mL) or litres (L) in a metric system of units.