Scale drawing

Question

The scale he used was 7 centimeter=1METER. What is the scale factor of the drawing? Simplify your answer and write it as ratio, using a colon.

Answer 1

If 7 cm = 1 meter and 1 meter = 100 cm, then:

                                                                       7 cm = 1 meter = 100 cm

                                                                       7 cm/7 cm = 100cm/7 cm

                                                                       1 = 100/7 or 1:100/7

Answer 2

1 meter = 100 cm

 

7 cm: 1 m = 7 cm: 100 cm = 7:100