billy drew a scale drawing of the school. The scale of the drawing was 10 centimeters = 4 meters. What scale factor does the drawing use? Simplify your answer and write it as a ratio, using a colon.

Question

Simplify your answer and write it as a ratio, using a colon.

Answer 1

Think of this as a fraction first. The drawing has 10cm./4m. Converting meters to centimeters, the fraction (ratio) is 10cm/400cm. Reducing that, it's 1/40. The scale, with a colon, is 1:40.