O-LevelMathematicsNumber4024/11 · Oct/Nov 2017 · Q62 Marks
As part of her training, Samantha runs for 2 hours. For the first 1½ hours she runs at an average speed of 10km/h. She runs 7 km in the remaining ½ hour. Calculate her average speed for the 2 hours.
- (a)As part of her training, Samantha runs for 2 hours. For the first 1½ hours she runs at an average speed of 10km/h. She runs 7 km in the remaining ½ hour. Calculate her average speed for the 2 hours.[2]
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2017). The mark or mark type is shown in brackets.
- [M1] for 1.5 × 10 + 7
- [2] 11
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