O-LevelMathematicsStatistics4024/11 · Oct/Nov 2025 · Q113 Marks
A bag contains 10 plums. The mean mass of 6 of the plums is 50 g. The mean mass of the remaining 4 plums is 40 g. Calculate the mean mass of all 10 plums in the bag.
- A bag contains 10 plums. The mean mass of 6 of the plums is 50 g. The mean mass of the remaining 4 plums is 40 g. Calculate the mean mass of all 10 plums in the bag.[3]
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2025). The mark or mark type is shown in brackets.
- [3] 46
- [M2] for (6*50 + 4*40) / 10 oe or M1 for 6*50 or 4*40 oe seen
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