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18 May, 04:48

A tv has height ratio 3:4. In a scale drawing the height is 4.5cm what would the width be?

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  1. 18 May, 06:38
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    4.5 : 3 = 1.5

    This means that the ratio has increased by 1.5

    Since anything multiplied on one side of a ratio has to be multiplied on the other side too, we multiply 1.5 by 4:

    1.5 X 4 = 6

    The width would be 6cm
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