O-LevelMathematicsNumber4024/12 · Oct/Nov 2014 · Q92 Marks
The time taken to run a race is given as 54.3 seconds, correct to the nearest 0.1 of a second.
- (a)Find the lower bound for the time taken.[1]
- (b)The distance run is given as d metres, correct to the nearest metre. Write down an expression, in terms of d, for the maximum possible average speed, in metres per second.[1]
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2014). The mark or mark type is shown in brackets.
- [1] (a) 54.25
- [1] (b) (d + 0.5) / 54.25 or ft (d + 0.5) / their(a) seen
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