$20 haircut 10% tip

Explain step by step pls

$22

Step-by-step explanation:

1. Approach;

In order to solve this problem, one would want to find the value of the tip, and then add it to the base price.

2. Find the tip;

A simple hack to find the percent of a number is to divide the percent (when it is still in a percent form) by 100, then multiply it but the number one wants to find the percent of.

10 / 100 = 0.1

20 * 0.1 = 2

The tip is $2.

3. Add it to the base price

base price + tip

20 + 2

22

$15 each

step-by-step explanation:

$45/3 children= $15 each