Series 5 Block 1 Review

In a poll, 125 out of 400 residents of a town said they preferred bottled water to tap water. What percent of the residents prefer bottled water to tap water?

• 31.25%

• 3.125%

• 312.5%

• 0.3125%

Jen interviewed 125 students for the school paper. She found that 70 students volunteer at a charity. What percent of the students volunteer at the charity?

Answer explanation

Chad ran in an election for mayor of his town. He received 55% of the vote. Of the 820 people who voted, how many voted for Chad?

Select from the numbers in the boxes to complete the sentence.

___ % of ___ is 20

• 50

• 40

• 150

• 300

85% of a number is 425. What is the number?

• 500

• 50

• 250

• 5

Cole is studying employment trends. He found that 25% of the social workers he surveyed, or 65 social workers, work part time. How many social workers did Cole survey altogether?

What number is 170 decreased by 30%?

• 221

• 119

• 85

• 1.7

The school budget for e-readers was $50,000 in 2020. The budget for 2021 was 5% less than the budget for 2020. What was the school budget for e-readers in 2021?

Select all that apply. Which of the following are equal to 200?

• 100 increased by 100%

• 175 increased by 25%

• 150 increased by 50%

• 160 increased by 25%

Last year, 180 students used tablet computers at Luz’s school. That number increased by 60% this year. How many students use tablet computers at Luz’s school this year?

• 108 students

• 288 students

• 72 students

• 60 students