Question 3 20 marks This question is based on your work: on M U1 23 up to and inciading Unit 2'9. (a) Iwan is training to take part in one of the cycle races in the Cambrian Coast Sportive. The route is 165km and Iwan hopes to complete it in 7 hours 30 minutes. Find his average speed in km per hour if he completes the route in this time. (b) On the day of the race, Iwan cycles at an average speed of 21.6km per hour. Find the time taken by Iwan to complete the 165 km route. Give your answer in hours and minutes, correct to the nearest minute. (c) Iwan studies the route of the race on a map with a scale of 1 : 250 000. He can see that the rst section of the route follows the coast. If this section measures 10.7cm on the map, nd the corresponding distance on the groiuid. Give your answer in km correct to three signicant figures. ((1) There is a very steep uphill section of the route near the halfway point. It starts at 185m above sea level and nishes at 554 In above sea level. Let h represent the height in m above sea level. (i) Explain what the inequality h 2 185 means in this practical context. (ii) Draw a number line to illustrate the range of heights above sea level encountered on this uphill section. (iii) Give a double inequality, using h, to describe the range of heights above sea level encountered on this uphill section. [4] [5] [1] [3]