Question

at an amusement park Corey spends 7 minutes on a ride for every 20 minutes he spends waiting in lines if he wants in line for 60 minutes how many minutes does he spend on rides

Answer 1

We can pose the question in the following way:

$\frac{7}{20}=\frac{x}{60}$

Because we have two directly proportional amounts and the ratio is constant. Then, solving the latter proportion, we have:

$x=\frac{7\cdot60}{20}\Rightarrow x=7\cdot(\frac{60}{20})\Rightarrow x=7\cdot3\Rightarrow x=21$

Then, Corey will spend 21 minutes on rides if he plans to spend 60 minutes in lines (according to the given proportion).