Question

a scale diagram of a train is being drawn using the ratio of 1 : 200 the train is 30cm long in real life. How long is the diagram of the train in cm?

Answer 1

The length of the diagram is 0.15 cm

Using the scale ratio given :

• drawing : real life

We have the scale

• 1 : 200

creating a proportional relationship;

1 : 200

x : 30

cross multiply

200x = 30

x = 30/200

x = 0.15

Hence, the length of the diagram is 0.15 cm