Percents: Solving for a Whole

Which setup can you use to solve the problem: 40 is what percent of 90?

What are you looking for in the following question: Of the 25 students is Kara's class, 45% are girls. How many are girls?

• Part

• Whole

• Percent

• Percent Change

Jeremy has read 30% of his new Harry Potter book. If the whole book is 360 pages, how many pages does Jeremy have left to read?

Manny scored a 90% on his quiz yesterday. He answered 36 questions correctly. How many questions were on the whole quiz?

35 is 35% of what number?

• 35

• 100

• 75

• 50

25 is 50% of what number?

• 100

• 75

• 50

• 25

30 is 60% of what number?

• 75

• 60

• 30

• 50

18 is 20% of what number?

• 100

• 200

• 90

• 180

80 is 10% of what number?

• 100

• 80

• 1000

• 800

How many total students are there in the choir?

• 115

• 120

• 130

• 136