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The average height of 30 boys out of a class of 5 is 160cm , if the remaining height of the boys is 165cm then average height of whole class is? |
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Answer» Answer: 162cm Step-by-step EXPLANATION: Average HEIGHT F the whole class = 30×160+20×16550 = 3×160+2×1655 = 96 + 66 = 162cm |
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