A runner plans a route of 10 miles. Use the miles-to-kilometres conversion graph (5 miles = 8 km) to answer the questions. (a) How many kilometres is the 10-mile route? (b) How long will it take the runner to complete the route if they run at 8 km/h? (c) If the runner instead runs at 5 miles per hour, what is that speed in km/h? (d) The runner wants to finish in 1 hour 40 minutes. What average speed in km/h is required?
(a)How many kilometres is the 10-mile route?(1)
(b)How long will it take the runner to complete the route if they run at 8 km/h?(2)
(c)If the runner instead runs at 5 miles per hour, what is that speed in km/h?(2)
(d)The runner wants to finish in 1 hour 40 minutes. What average speed in km/h is required?(3)
(Total for Question 15 is 8 marks)