A
percent can be used to represent the ratio between two quantities.
A percent of a number can be found by multiplying the percent by the number.
Percents can be used to find:
- Simple interest
- Tax
- Markups
- Discounts
- Gratuities
| | - Commissions
- Fees
- Percent increase and decrease
- Percent error
|
The sales tax is 7.5% of $55.60.
First, multiply 7.5% by $55.60 to find the sales tax.
| 7.5% × $55.60 | = | 0.075 × $55.60 |
| = | $4.17 |
Then, add the sales tax to the cost of the clothes.
$55.60 + $4.17 = $59.77
So, Summer spent $59.77 with tax included.
First, find the decrease in the number of employees.
125 - 105 = 20
Then, find the percent decrease by dividing the decrease by the original number of employees.
So, the number of employees at the company decreased by 16%.
7th Grade Math - Ratio & Percent Problems Lesson