0580/13 Oct/Nov 2025, Question 24: Back Bearings
Cambridge IGCSE Mathematics 0580 · Paper 13 (Core) · Non-calculator · 3 marks
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The question, in short
Map scale question: convert 1 cm to 12 km into ratio form 1 : n, and use a bearing of 070° to find the reverse bearing.
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Part (a) · 1 mark
Write the map scale of 1 cm representing 12 km as a ratio in the form 1 : n.
- 112 km = 12 × 1000 × 100 = 1 200 000 cm
- 21 : 1 200 000
Answer1 200 000
Part (b) · 2 marks
Given the bearing of B from A is 070°, work out the bearing of A from B.
- 1Bearing of A from B = 070 + 180
- 2= 250°
Answer250
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Also searched as: 0580/13/O/N/25 · 0580_w25_qp_13 · 0580 w25 13 · question 24.
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