Question

Q4(B) Find the whole quantity if

2) 8% of it is 40 litres.​

Answer 1

• As per the data given in the question, we have to determine the required number.

            Given data:-  $8\%$ of it is $40$ liters.

            To find:- Value of given expression.

            Solution:-

• A percentage is a fraction of an amount expressed as a particular number of hundredths of that amount.

• It is denoted by $\% .1 \%$ means $\frac{1}{100} .$  

• We are using the unitary method to calculate the percentage of numbers.

• Fractions can be converted into percentages and vice-versa.

           Therefore,

        Let the number $x,$

        $\begin{array}{l}8 / 100 \times x=40 \\x=40 \times 100 / 8 \\x=4000 / 8 \\x=500\end{array}$

   Hence we will get the value $500$ liters.

Answer 2

Given: $8$% of it is $40$liters.​

We have to find the whole quantity.

As we know that a percentage is a fraction of an amount expressed as a particular number of hundredths of that amount.

We are solving in the following way:

We have,

$8$% of it is $40$liters.

Let the number be$'x'$.

$\begin{array}{l}=>8 / 100 \times x=40 \\\\=>x=40 \times 100 / 8 \\\\=>x=4000 / 8 \\\\=>x=500\end{array}$

Hence, the value of the whole quantity is $500$liters.