Question

Sarah stands next to a 64ft high building and she measures that it has a 288ft shadow. Sarah's shadow is 18ft. How tall is Sarah?

Answer 1

4 ft

Explanation:

Let's use a ratio:

`"height of building"/"building shadow"="height of Sarah"/"Sarah shadow"`

`64/288=x/18`

I'll simplify the left hand side first:

`4/18=x/18=>x=4`