Question

Find the distance, d, across the river. Assume that the ratio of d to 150 ft is the same as the ratio of 120 ft to 30 ft.

Answer 1

Since the ratio of d to 150 ft is the same as the ratio of 120 ft to 30 ft, we can write

`\begin{gathered} (d)/(150)=(120)/(30) \\ (d)/(150)=4 \\ d=150*4=600 \end{gathered}`

Therefore, the distance, d, across the river is 600 ft.