Exam-Style Question on Speed
A mathematics exam-style question with a worked solution that can be revealed gradually
Question id: 473. This question is similar to one that appeared on a GCSE Higher paper in 2017. The use of a calculator is allowed.
Mr Finknottle takes his parents for a drive in his car.
He drives the first ten miles in ten minutes then drives at an average speed of 68 miles per hour for 1 hour 45 minutes.
He finds this information about his car:
|Average Speed (s)||\(s \le 65 mph\)||\( s\gt 65 mph\)|
|Miles travelled per gallon||60||50|
Use the information to find how many gallons of petrol he uses during the drive.
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