A train travelled along a track in 120 minutes, correct to the nearest 5 minutes.
Sue finds out that the track is 290 km long.
She assumes that the track has been measured correct to the nearest 10 km.
a) Could the average speed of the train have been greater than 145 km/h?
You must show how you get your answer and your final line must clearly
say, 'Yes' or 'No'.
(4)
(1)
Sue's assumption was wrong.
The track was measured correct to the nearest 5 km.
b) What will the new maximum average speed be in km per minute?
Give your answer correct to 2 decimal places.
km/minute
Total marks: 5
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Jack Bischoft
12 May 2022, 10:00 PM
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