9th Grade Speed, Distance and Time Worksheet — Level 3 — Practice Set 4 — Answers
Answer sheet with worked solutions for the 9th Grade ratios & rates worksheet.
Success TutoringWorksheetsAnswer sheet9th Grade · Mathematics · Ratio & Rates9th Grade Speed, Distance and Time Worksheet — Level 3 — Practice Set 4 — Answers
Use speed = distance ÷ time, distance = speed × time and time = distance ÷ speed. Change minutes to hours (÷ 60) before calculating.
1.Harper travels 40 km in 40 minutes. What is the average speed in km/h?
Answer: 60 km/h
- time = 0.6667 h
- speed = distance ÷ time = 40 ÷ 0.6667
- = 60 km/h
2.Ruby travels 80 km in 40 minutes. What is the average speed in km/h?
Answer: 120 km/h
- time = 0.6667 h
- speed = distance ÷ time = 80 ÷ 0.6667
- = 120 km/h
3.Layla travels 67.5 km in 2 hours 15 minutes. What is the average speed in km/h?
Answer: 30 km/h
- time = 2.25 h
- speed = distance ÷ time = 67.5 ÷ 2.25
- = 30 km/h
4.A car travels 112.5 km at an average speed of 90 km/h. How long does the trip take?
Answer: 1 hour 15 minutes
- time = distance ÷ speed = 112.5 ÷ 90
- = 1.25 h = 1 hour 15 minutes
5.Harper travels 22.5 km in 45 minutes. What is the average speed in km/h?
Answer: 30 km/h
- time = 0.75 h
- speed = distance ÷ time = 22.5 ÷ 0.75
- = 30 km/h
6.Mia travels 20 km in 40 minutes. What is the average speed in km/h?
Answer: 30 km/h
- time = 0.6667 h
- speed = distance ÷ time = 20 ÷ 0.6667
- = 30 km/h
7.A car travels 45 km at an average speed of 30 km/h. How long does the trip take?
Answer: 1 hour 30 minutes
- time = distance ÷ speed = 45 ÷ 30
- = 1.5 h = 1 hour 30 minutes
8.A car travels 30 km at an average speed of 90 km/h. How long does the trip take?
Answer: 20 minutes
- time = distance ÷ speed = 30 ÷ 90
- = 0.3333 h = 20 minutes
9.Noah travels 50 km in 50 minutes. What is the average speed in km/h?
Answer: 60 km/h
- time = 0.8333 h
- speed = distance ÷ time = 50 ÷ 0.8333
- = 60 km/h
10.A car travels 80 km at an average speed of 120 km/h. How long does the trip take?
Answer: 40 minutes
- time = distance ÷ speed = 80 ÷ 120
- = 0.6667 h = 40 minutes
Marking tips
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