Question

A scale drawing of a lake has a scale of 1 cm to 80 m. If the actual

width of the lake is 1,000 m, what is the width of the lake on the
scale drawing in centimeters

Answer 1

My answer is in the photo above

Answer 2

The lake is 12.5 cm on the map.

Explanation:

1 cm / 80 m = x/ 1000 m

That is the proportion you need to solve the problem. You know that the scale of the map is 1 cm and that 1 cm represents 80 meters of lake

That's 1 side of the proportion. The other side comes from x on the map which represents 1000 meter.

1 cm / 80 m = x / 1000 multiply both sides by 1000

1 *1000 / 80 = x

12.5 = x