Question

David fills an aquarium to a depth of 4/5 meters in 8 minutes. What is the unit rate in minutes per meter? In simplest form.

Answer 1

Unit rate

• Time÷depth
• 8÷4/5
• 8×5/4
• 5(2)
• 10mins per meter

Answer 2

• 10 minutes per meter

Explanation:

Solve this by ratios

• 4/5 meters ⇔ 8 minutes
• 1 meter ⇔ x minutes

Cross product is

• 4/5*x = 1*8
• x = 5*8/4
• x = 10 minutes