A cyclist rides to a village at 20 km/h and returns by the same road at 30 km/h. What is the average speed for the whole trip?
Answer and explanation
Correct answer: C. 24 km/h
- Step 1: For a distance each way the total time is , so the average speed is divided by that time, km/h. Answer: 24 km/h. Why not the others: 25 km/h, 6 km/h and 10 km/h don't fit.
Practise more Harder multi-step problems.
Free questions with an explanation for every one, and full timed Egzamin Osmoklasisty (Eighth-Grade Exam, Poland) mock tests.
More Harder multi-step problems questions
- The sum of two numbers is 9 and their difference is 1. What is the larger number?
- Solve . What is ?
- A cyclist rides to a village at 30 km/h and returns by the same road at 60 km/h. What is the average speed for the whole trip?
- What is the total surface area of a cuboid measuring 8 cm by 5 cm by 6 cm?
- A rectangular screen is 9 cm wide and 12 cm high. What is the length of its diagonal?
- After a discount of 20% a bike costs 400 zloty. What was the price before the discount?