4400 Higher November 2009 Paper 3 Q23

EdexcelHigherOld spec4 marksCompound MeasuresUpper & Lower Bounds

23 In a race, Paula runs 25 laps of a track.
Each lap of the track is 400 m, correct to the nearest metre.
Paula’s average speed is 5.0 m/s, correct to one decimal place.

Calculate the upper bound for the time that Paula takes to run the race.
Give your answer in minutes and seconds, correct to the nearest second.

(4)