Petra thinks of a number. The number is a multiple of 7. Petra says: When I write my number correct to the nearest ten it is 30. Find the number that Petra thinks of.
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2025). The mark or mark type is shown in brackets.
- [2] 28 cao
- [2] B1 for answer in range 25 to 35
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