3. Linda measured the shadow of a yardstick on the playground. It was 20 inches long. Her shadow was 32 inches long. How tall is Linda?

This can be set up as a ratio and proportion problem.

Actual

Shadow

Linda

x

32

Yardstick

36

20

When we set the ratios equal we get the following equation

Since we have cleverly set it up so that the unknown is on top, we need only multiply both sides by 36 to solve for x.

Cancel

This will probably make more sense as a mixed number. Divide the bottom into the top.

or 4 feet 9 and 3/5 inches tall.