Lesson 3.7 – Solving Percent Problems Percent means “divided by ...

Lesson 3.7 – Solving Percent Problems

Percent means “divided by 100” Ex:

Dividing by 100 is the same as moving the decimal 2 places to the left.

The Percent Equation Solve an equation by translating each part of the sentence. Remember we never calculate with the “%” symbol. Always convert it to a decimal first. What percent of

136

What number is

15%

is

51?

of 88?

20 is 12.5 percent of what number?

What number is 140% of 50?

What percent of 56 is 49?

What number is 45% of 92?

A survey asked 220 students to name their favorite pasta dish. Find the percent of students who chose the given pasta dish.

a) Mac and cheese b) Lasagna

For what percent of students is mac and cheese the favorite?

For what percent of students is lasagna the favorite?

Type of pasta

Students

Spaghetti

83

Lasagna

40

Mac and Cheese

33

Fettuccine Alfredo

22

Baked Ziti

16

Pasta primavera

15

Other

11