Question

A TV has height:width in ratio 3:4. In a scale

drawing the height is 4.5cm.

What would the width be?

Answer 1

Here, we need to set up the ratios.

height / width = 3 / 4

So, what is the width if the height is 4.5?

4.5 / width = 3/ 4

Cross multiply

18 = 3 width
6 = width