IXL | Solve percent word problems

Eli's class voted on whether or not to do science fair projects in groups. Of the votes received, 9 were in favor of working in groups and 21 were opposed. What percentage of the votes were in favor of working in groups?

Write your answer using a percent sign (%).

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Learn with an example

question

A school staff meeting had 40 teachers in attendance, 90% of whom were first-year teachers. How many first-year teachers were in the meeting?

first-year teachers

key idea

A percent is 1 part out of 100.

1%
is
equal
to
1
100
or
0.01.

Proportions can be used to solve percent problems.

part

whole

percent

100

solution

Find 90% of 40.

The whole is 40.

The percent is 90%.

Let n represent the part.

Write a proportion to solve for n.

100

100n

90 · 40

100n

3,600

100n ÷ 100

3,600 ÷ 100

36 first-year teachers were in the meeting.

You could also find the answer by writing and solving an equation:

part	=	percentage of whole

n	=	90% · 40

n	=	0.9 · 40

n	=	36

36 first-year teachers were in the meeting.

Looking for more? Try these:

Lesson: Percents

Lesson: Converting between fractions, decimals, and percents

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Teacher tools

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V.10Solve percent problems

V.3Solve percent problems using strip models

V.2Solve percent problems using grid models

Lesson: Percents

Lesson: Converting between fractions, decimals, and percents

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