Decide mentally whether each statement is true.

Priya and Han are making kinche for a breakfast event at school. The instructions for a large batch of kinche say, “Bring 15 cups of water to a boil. Then add 6 cups of crushed wheat.”

• Priya says, “The ratio of cups of wheat to cups of water is . That’s 0.4 cup of wheat per cup of water.”
• Han says, “The ratio of cups of water to cups of wheat is . That’s 2.5 cups of water per cup of wheat.”

1. Who is correct? Explain your reasoning. If you get stuck, consider using the table.

   water (cups)	wheat (cups)
   15	6
   1
   	1

2. Priya and Han are each making a pot of kinche.

   1. Priya has 5 cups of wheat. How many cups of water should she boil? Show your reasoning.
   2. Han boils 10 cups of water. How many cups of wheat should he add into the water? Show your reasoning.

For each situation, find the unit rates. Then choose a unit rate to solve the problem in part c. Show your reasoning.

1. A laundry service uses 10 gallons of detergent every 6 weeks.

   1. How many gallons of detergent does the laundry service use per week?
   2. How many weeks does it take the laundry service to use 1 gallon of detergent?
   3. How many weeks will it take the laundry service to finish 3 gallons of detergent?

2. Tyler paid \$16 for 4 raffle tickets.

   1. What is the price per ticket?
   2. How many tickets is that per dollar?
   3. How much would 1,000 raffle tickets cost?