Chapter 6.2, Problem 56HP

To determine

Describe the two methods of calculating percentage

Answer to Problem 56HP

The two types of the methods are direct percentage and unitary method.

Explanation of Solution

Given:

It is given in the question that the expression is $20\%of60$ .

Calculation:

Here, The first method is (Direct percentage):

  $\begin{array}{l}20\%of60\\ 20\%=\frac{20}{100}\\ =\frac{20}{100}\times 60\\ =12\end{array}$

The second method is (Unitary method):

If it has to be take $10\%of60$ which is $6$ .

So, $20\%of60$ is twice of $10\%$ which is: $=2\times 6=12$