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09-06-2015
Mathematics

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a TV has a height:width in ratio 3:4. In a scale drawing the width is 10cm. What would the height be ?

Respuesta :

09-06-2015

The height:weight ratio is 3:4 which can be written as 3/4
In the scale drawing, the ratio is x:10 or x/10
Set the two ratios together.
3/4 = x/10
30 = 4x
x = 7.5

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