In the morning, Sophie goes to the church then goes to the school. In the afternoon she goes to school to home. The map shows the distance between school and home as 5 centimeters.

Question

If every 4 centimeters on the scale drawing equals 8 kilometers, how far apart are school and home?

Answer 1

^{8 km}/_{4 centi} * 5 centimeters = ____ kilometers

Centimeters cancel out:

8/4 kilometers * 5 = ____ kilometers

Factor out 4:

^{2 * 4}/_{1 * 4} kilometers * 5 = ____ kilometers

²/₁ kilometers * 5 = ____ kilometers

Anything divided by 1 is itself:

2 kilometers * 5 = ____ kilometers → 10 kilometers