Direct proportion – Easy

Last updated: 24/08/2021
OCR GCSE Maths – Higher Ratio, Proportion and Rates of Change Direct proportion – Easy
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  1. x ∝ y, when x = 63, y = 36. What is y when x = 7?

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  2. x ∝ y, when x = 3, y = 5. What is x when y = 30?

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  3. x ∝ y, when x = 8, y = 2. What is x when y = 6?

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  4. x ∝ y, when x = 30, y = 45. What is x when y = 9?

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  5. x ∝ y, when x = 6, y = 3. What is y when x = 30?

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  6. x ∝ y, when x = 7, y = 5. What is x when y = 15?

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  7. x ∝ y, when x = 6, y = 3. What is y when x = 18?

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  8. x ∝ y, when x = 56, y = 42. What is x when y = 6?

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  9. x ∝ y, when x = 45, y = 36. What is x when y = 4?

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  10. x ∝ y, when x = 12, y = 24. What is y when x = 2?

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  11. x ∝ y, when x = 32, y = 24. What is x when y = 3?

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  12. x ∝ y, when x = 16, y = 14. What is x when y = 7?

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  13. x ∝ y, when x = 6, y = 7. What is x when y = 56?

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  14. x ∝ y, when x = 42, y = 36. What is y when x = 7?

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  15. x ∝ y, when x = 16, y = 28. What is x when y = 7?

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  16. x ∝ y, when x = 15, y = 20. What is x when y = 4?

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  17. x ∝ y, when x = 5, y = 2. What is y when x = 25?

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  18. x ∝ y, when x = 6, y = 8. What is x when y = 4?

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  19. x ∝ y, when x = 36, y = 48. What is x when y = 8?

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  20. x ∝ y, when x = 9, y = 12. What is y when x = 3?

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  21. x ∝ y, when x = 9, y = 5. What is y when x = 72?

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  22. x ∝ y, when x = 15, y = 21. What is x when y = 7?

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  23. x ∝ y, when x = 3, y = 6. What is y when x = 24?

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  24. x ∝ y, when x = 7, y = 9. What is x when y = 54?

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  25. x ∝ y, when x = 54, y = 48. What is y when x = 9?

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