GCSE Secondary Maths Age 13-17 - Number: Bounds - Explained

The video tutorial explains how to calculate the lower bound for the average speed of a journey. It covers the concepts of upper and lower bounds, setting up the problem with given distance and time, and performing calculations to find the bounds. The tutorial emphasizes the importance of converting units and provides a step-by-step guide to solving the problem, including calculating the average speed and ensuring the answer is correct to three significant figures.

What is the lower bound for the distance Steve travelled from Ashton to Barnfield?

How long did the journey take in minutes, and what is the lower bound for this time?

What is the formula used to calculate average speed?

Explain how to calculate the lower bound for average speed using distance and time.

What conversion must be made to the time in order to calculate speed in MPH?

What is the final answer for the average speed rounded to three significant figures?

Describe the importance of upper and lower bounds in this calculation.