How to find a part a whole and a percent by using equations
What you need to know.
Percent- a rate per 100.
In this lesson we will solve problems using equations. Now the first thing we have to do is read the problem carefully. Next identify what information is given. Next you have to identify what information is unknown. Use a variable to represent the unknown quality. Also "of" means multiply and "is" means equals. If your confused you will get it when we go through a problem. So first lets do one. Reminder
"of" = multiplication sign
"is" = equals sign
"What percent and What number"change it to a variable
Percent a. What percent of 30 is 12
n * 30 = 12
Whole b. 80% of what number is 40
0.80 * n = 40
Part c. What number is 26% of 60
n = 0.26 * 60