Question

a class is making amodel of the school building and the ratio of the height of the model to the heights of the actual building is 1:20.the gym is 6m high. how high, in centimetres, should the model of the gym be?

Answer 1

$\frac{1}{20} = \frac{x}{600} \\ x = \frac{600}{20} \\ x = 30$