1. To find 40% of 75, Priya calculates \(\frac{2}{5} \boldcdot 75\). Does her calculation give the correct value for 40% of 75? Explain or show how you know.

2. If \(x\) represents a number, does \(\frac{2}{5} \boldcdot x\) always represent 40% of that number? Explain your reasoning.

Han spent 75 minutes practicing the piano over the weekend. For each question, explain or show your reasoning.

1. Priya practiced the violin for 152% as much time as Han practiced the piano. How long did she practice?
2. Tyler practiced the clarinet for 64% as much time as Han practiced the piano. How long did he practice?

Last Sunday 1,575 people visited the amusement park. 56% of the visitors were adults, 16% were teenagers, and 28% were children ages 12 and under.

Find the number of adults, teenagers, and children who visited the park.

Order from greatest to least:

Complete each statement.

1. 20% of 60 is ________.
2. 25% of ________ is 6.
3. ________% of 100 is 14.
4. 50% of 90 is ________.
5. 10% of ________ is 7.
6. 30% of 70 is ________.

A store sells the same kind of sandwich rolls in different-size packages. A six-pack costs \$5.28 and a four-pack costs \$3.40.

Which package size is a better deal? Explain your reasoning.

On a field trip, there are 3 chaperones for every 20 students. There are 92 people on the trip.

1. How many chaperones are there?
2. How many students are there?

If you get stuck, consider using a tape diagram.