Question

The length of the model is 30 cm. The length of the real plane is 72 m. Give your answer in the form 1:n

Answer 1

Answer:

1:240

Step-by-step explanation:

1 m=100 cm

72 m=7200 cm

Therefore, the scale is

30:7200 =  1:240

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Answer 2

Answer:

First you convert metres to centimetres as in order to compare them they have to be of same unit.

Then you put it in the form of a fraction the first quantity as numerator and second as denominator and then simplify.

Step-by-step explanation:

72 metres= 7200 cm ( as 1 m= 100cm)

since the ratio required is length of model: length of real plane

30/7200

= 1/240

= 1:240