Cost, Height, and Percentage Problems

Mr. Richards reviews grade six practice problems on percentages. The video covers calculating percentages for various scenarios, including determining height requirements for a roller coaster, savings on a toolset, bathtub filling rates, sale price calculations, cost comparisons of hotdog packages, and converting height measurements. Each problem is explained step-by-step, demonstrating how to convert decimals to percentages and apply mathematical reasoning to solve real-world problems.

If a roller coaster requires a minimum height of 40 inches, what percentage of this height is 34 inches?

• 80%

• 85%

• 75%

• 90%

A person is 54 inches tall. What percentage of the required 40 inches height for a roller coaster does this represent?

• 115%

• 125%

• 135%

• 145%

During a sale, a toolset costs $12 less than its usual price of $80. What percentage of the usual price is the savings?

• 15%

• 18%

• 12%

• 10%

How much of a bathtub that holds 80 gallons will be filled after 6 minutes if the faucet flows at 4 gallons per minute?

• 30%

• 35%

• 20%

• 25%

If an item is usually priced at $30 and is on sale for 85% of its usual price, what is the sale price?

• $24.50

• $26.00

• $25.50

• $27.00

An item with a usual price of $18 is on sale for 85% of its usual price. What is the sale price?

• $15.00

• $14.50

• $16.00

• $15.30

A soccer ball is usually priced at $24.80. What is its sale price if it is sold at 85% of its usual price?

• $23.00

• $20.50

• $22.00

• $21.08

If a six-pack of hot dogs costs $2.10, what is the cost per hot dog?

• $0.35

• $0.45

• $0.40

• $0.30

Convert 56 inches to centimeters given that 100 inches equals 254 centimeters.

• 140.00 cm

• 142.24 cm

• 146.00 cm

• 144.00 cm

What is the height in meters of someone who is 56 inches tall, knowing that 100 centimeters equals 1 meter?

• 1.4224 m

• 1.5000 m

• 1.4000 m

• 1.4500 m