Question

A scale drawing of a lake has a scale of 1 cm to 80 m. If the actual width was f the lake is 1,000 m, what is the width of the lake on the scale drawing?

Answer 1

12,5 centimeters.

Explanation:

We take the following proportion

`(1 cm)/(80m) = (x)/(1000m)`

Which becomes:

`1000 = 80x`

And then, we clear out the variable x:

`(1000)/(80)=(100)/(8)=(50)/(4)=12,5`

And this means that the width of the lake on the scale drawing will be 12.5 cm.