IXL - Percent word problems (Algebra 1 practice)

A school assembly had 80 students in attendance, and 10% of them were first-graders. How many first-graders were at the assembly?

first-graders

ref_doc_title.

Learn with an example

question

Tom's Cafe has regular coffee and decaffeinated coffee. This morning, the cafe served 25 coffees in all, 60% of which were regular. How many regular coffees did the cafe serve?

regular coffees

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 60% of 25.

The whole is 25.

The percent is 60%.

Let n represent the part.

Write a proportion to solve for n.

100

100n

60 · 25

100n

1,500

100n ÷ 100

1,500 ÷ 100

The cafe served 15 regular coffees.

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

part	=	percentage of whole

n	=	60% · 25

n	=	0.6 · 25

n	=	15

The cafe served 15 regular coffees.

Looking for more? Try these:

Lesson: Percents

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Teacher tools

Work it out

Not feeling ready yet? These can help:

H.9Solve percent equations

L.3Multiply fractions by whole numbers: word problems

S.5Write a ratio: word problems

Lesson: Percents

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