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Mathematics for IGCSE & O level - Ratio And Proportion (Section 6 - No. 12)

What is 1.5 hours to 45 minutes expressed as a ratio in simplest form?
1:2
2:1
3:1
3:2

Erläuterung

1. 5 hours = 90 minutes. Therefore 90:45 = 2:1

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