Q 7: Find the average of a set of numbers: 2.3, 3.4, 4.5, 5.6, 6.7, 7.8, 8.9 5.2 4.5 5.6
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Q 8: The ratio of blue paint to red paint in the color purple is 7 : 3. How many tins of blue paint are required to mix with 9 tins of red when making purple paint? 21 15 20
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