O-LevelMathematicsNumber4024/22 · May/June 2023 · Q68 Marks
Sophia takes part in the Trio Challenge. She walks, then cycles and then swims. Trio Challenge Walk 6.3 km Cycle 3000 m Swim 1800m
- (a)Write these distances walk : cycle : swim as a ratio in its simplest form.[2]
- (b)Sophia walks at an average speed of 1.4m/s. She completes the walk at 11 05. Find the time she starts walking.[3]
- (c)Sophia cycles a distance of 3000m correct to the nearest 10 metres. She cycles this distance in a time of 450 seconds correct to the nearest 10 seconds. Calculate the upper bound for her average cycling speed in metres per second.[3]
Mark scheme
Marking points from the official mark scheme (May/June 2023). The mark or mark type is shown in brackets.
- [2] B1 for 6300: 3000: 1800 oe
- 21:10: 6 final answer
- [3] B2 for 75 [minutes] or 1 hour 15 minutes or 1.25 [hours]
- or M1 for figs 63 / speed
- [0]9 50[am]
- After 0 scored, SC1 for answer 10 44[am] or 10 29[am] or [0]8 53[am]
- [3] B1 for 3005 and 445 seen
- M1 for their3005 / their 445
- 6.75 nfww or 6.752 to 6.753 or 67/6 or 89/6
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