D S T CAREFUL! ! 2hr 15 minutes to decimal is

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Presentation transcript:

D S T CAREFUL! ! 2hr 15 minutes to decimal is Distance Time D S T D= S T How long did the bus journey take if it travelled a total distance of 60 km at an average speed of 40 km/hr. A racing car travelled at 50 km/hr. What is the distance covered in 6 hours 30mins ? Speed Daniel drove from his house to the Blackpool, a distance of 135 miles. It took him 2hrs 15mins. What was his average speed? Distance Speed Time If distance is in kilometres and time in hours then speed is in kilometres per hour CAREFUL! ! Units MUST be consistent !! To change minutes to decimal hours ‘divide minutes by 60’ To change decimal time to minutes ‘multiply the decimal part by 60’ 2hr 15 minutes to decimal is 3.7 hrs to hours and minutes is Converting Time = 2.25 hrs = 3 hrs 42 mins