Cost and Rate Problems in Mathematics

The video tutorial covers the concept of equivalent ratios and unit rates. It begins with an introduction to these concepts, followed by a warm-up exercise comparing speeds using ratios. The tutorial then explores calculating costs of burritos and production rates of bracelets using unit rates. Finally, it compares ice cream eating rates, demonstrating how to use ratios to solve real-world problems. The video emphasizes the importance of understanding unit rates to determine when to multiply or divide in various scenarios.

Which of the following is NOT a correct equivalent ratio for 5 miles in 15 minutes?

• 10 miles in 30 minutes

• 32 kilometers per hour

• 20 miles per hour

• 1 mile in 3 minutes

If two burritos cost $14, what is the cost of one burrito?

• $8

• $7

• $6

• $5

How much would 10 burritos cost if each burrito is priced at $7?

• $70

• $80

• $90

• $60

If Noah buys an unknown number of burritos for c dollars, and Lynn buys twice as many, how does her total cost compare?

• Equal to Noah's cost

• Three times Noah's cost

• Twice Noah's cost

• Half of Noah's cost

What remains constant when scaling the number of burritos and their total cost?

• Total cost

• Number of burritos

• Unit price

• None of the above

If 6 bracelets are made per hour, how many hours will it take to make 66 bracelets?

• 10 hours

• 13 hours

• 11 hours

• 12 hours

How many hours and minutes will it take to make 100 bracelets at a rate of 6 per hour?

• 17 hours

• 16 hours 40 minutes

• 16 hours 30 minutes

• 16 hours 20 minutes

If Jada eats 2 scoops of ice cream in 5 minutes, how many scoops does she eat per minute?

• 2/5 scoop

• 3/5 scoop

• 4/5 scoop

• 1/5 scoop

Noah eats 3 scoops of ice cream in 5 minutes. How many scoops does he eat per minute?

• 4/5 scoop

• 1/5 scoop

• 3/5 scoop

• 2/5 scoop

Together, how long will it take Jada and Noah to eat one scoop of ice cream?

• 4 minutes

• 3 minutes

• 2 minutes

• 1 minute