Calculating Rates and Costs

The video tutorial covers four practice problems involving ratio and proportion calculations. It starts with determining how far an elevator can travel in 12 seconds based on its speed over 10 seconds. Next, it calculates the earnings for 7 hours of babysitting given the rate for 4 hours. The third problem involves finding the cost of 11 cans of dog food using the price for 5 cans. Finally, it calculates the time required to set 26 tables in a restaurant based on the time taken for 4 tables.

If an elevator travels 310 feet in 10 seconds, how far will it travel in 12 seconds?

• 372 feet

• 360 feet

• 400 feet

• 310 feet

What is the speed of the elevator in feet per second?

• 33 feet per second

• 31 feet per second

• 30 feet per second

• 32 feet per second

Han earns $33 for 4 hours of babysitting. How much does he earn per hour?

• $8.00

• $8.75

• $7.50

• $8.25

If Han babysits for 7 hours, how much will he earn?

• $50.75

• $55.00

• $57.75

• $60.00

What is the cost of one can of dog food if 5 cans cost $4.35?

• $0.80

• $0.90

• $0.85

• $0.87

How much do 11 cans of dog food cost?

• $9.70

• $9.50

• $9.57

• $9.60

If the cost of 5 cans of dog food is $4.35, what is the cost of 2 cans?

• $1.80

• $1.74

• $1.76

• $1.70

How long does it take to clear and set one table if 4 tables take 10 minutes?

• 3 minutes

• 2.5 minutes

• 2.75 minutes

• 2 minutes

How long will it take to clear and set all 26 tables in the restaurant?

• 75 minutes

• 70 minutes

• 60 minutes

• 65 minutes

If the weight staff can clear and set 4 tables in 10 minutes, how many tables can they clear and set in 20 minutes?

• 8 tables

• 12 tables

• 6 tables

• 10 tables