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5. Determine if the following ratios form a proportion:(i) 25 cm 1 m and 40 160(il) 39 litres : 65 litres and 6 bottles: 10 bottles(iii) 200 mL : 2.5 L and 4: 50(iv) 2 kg: 80 kg and 25 g: 625 kg

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I couldn't understand 4th question. please get understand in right way.thank you



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