Question

Here, $20\% $ of $150$ is what number?

Answer 1

Hint: Use percentage formula to solve the questions.
Percentage: Percentage formula is used to find the amount or share of something in terms of hundred.in simplest form percent means per hundred. For expressing something in percent one needs to find the amount or share in $100$ . To express a number between zero and one percentage formula is used. It is also defined as a number represented as a fraction of hundred. Percentage is denoted by the symbol $\% $ and is commonly used to compare and find out ratios. Things to remember for percentage is to calculate the fraction in hundred.
Formula used for this problem: To calculate $p\% $ of $q$ , use the percentage formula as $\left( {\dfrac{p}{{100}} \times q} \right)$ .
We define the percentage value as $\dfrac{x}{{100}}$ if we have $x\% $ . First we collect the given percentage value and after that we multiply the percentage value with the principal value and we get the required answer.

Complete step by step answer:
In the given question we find the number which is $20\% $ of $150$ .
Here $p = 20$ and $q = 150$ .
We use the percentage formula to find the required result
Putting the values in the formula and we get
$\dfrac{{20}}{{100}} \times 150$
We divide $100$ by $20$ and we get $5$ ,
i.e., $\dfrac{{20}}{{100}}$ and we get $\dfrac{1}{5}$
substitute in the above equation and we get
$ = \dfrac{1}{5} \times 150$
We divide $150$ by $5$ , we get
$ = 30$ .
Therefore the required answer of the given problem is $30$

Note:
For this type of question we use the another method of solving that is called unitary method
We know that \[20\% \] means $20$ out of $100$
In $100$ number, get $20$
$1$ number, get $\dfrac{{20}}{{100}}$
$\therefore 150$ number, get $\dfrac{{20}}{{100}} \times 150 = 30$
The required answer is $30$ .