Question

On average, 10 inches of freshly fallen snow melt down to 1 inch of liquid water. using this 10 to 1 ratio, the water equivalent depth of 45 cm of fresh snow is about _____ cm.

Answer 1

Hello

The ratio between depth of snow and depth of water is 10:1. So, if we use 45 cm as depth of snow, the proportion to write is
$10:1=45:x$
where x is the depth of equivalent water. From the proportion we get
$x= \frac{45cm}{10} =4.5$ cm.