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Edexcel GCSE Maths Spec B – Modular: Booster C © Pearson Education 2010. This document may have been altered from the original. To understand how to answer.

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Presentation on theme: "Edexcel GCSE Maths Spec B – Modular: Booster C © Pearson Education 2010. This document may have been altered from the original. To understand how to answer."— Presentation transcript:

1 Edexcel GCSE Maths Spec B – Modular: Booster C © Pearson Education 2010. This document may have been altered from the original. To understand how to answer a question about average speeds. Objectives

2 Edexcel GCSE Maths Spec B – Modular: Booster C © Pearson Education 2010. This document may have been altered from the original. 1. Ryan is running along a straight road. He runs at 4 metres per second for 25 seconds and then sprints over a further distance of 60m in 10 seconds. What is Ryan’s average speed over the whole journey? Use the formula:

3 Edexcel GCSE Maths Spec B – Modular: Booster C © Pearson Education 2010. This document may have been altered from the original. 1. Ryan is running along a straight road. He runs at 4 metres per second for 25 seconds and then sprints over a further distance of 60m in 10 seconds. What is Ryan’s average speed over the whole journey? The total time is easy to find. = 25 + 10 = 35s

4 Edexcel GCSE Maths Spec B – Modular: Booster C © Pearson Education 2010. This document may have been altered from the original. 1. Ryan is running along a straight road. He runs at 4 metres per second for 25 seconds and then sprints over a further distance of 60m in 10 seconds. What is Ryan’s average speed over the whole journey? The total distance is harder.......

5 Edexcel GCSE Maths Spec B – Modular: Booster C © Pearson Education 2010. This document may have been altered from the original. 1. Ryan is running along a straight road. He runs at 4 metres per second for 25 seconds and then sprints over a further distance of 60m in 10 seconds. What is Ryan’s average speed over the whole journey? First 25 seconds:Whole journey:

6 Edexcel GCSE Maths Spec B – Modular: Booster C © Pearson Education 2010. This document may have been altered from the original. 1. Ryan is running along a straight road. He runs at 4 metres per second for 25 seconds and then sprints over a further distance of 60m in 10 seconds. What is Ryan’s average speed over the whole journey? Metres per second

7 Edexcel GCSE Maths Spec B – Modular: Booster C © Pearson Education 2010. This document may have been altered from the original. For the average speed you need the total distance and the total time. Summary Break the problem down into different sections so that you can gather the total distance and the total time easily.

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