$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

the answer is 510

step-by-step explanation:

15 • 13 = 195

15 • 12 = 180

15 • 5 = 75

12 • 5 = 60

195 + 180 = 375

375 + 75 = 450

450 + 60 = 510

24

step-by-step explanation: