Jennifer is on her daily run. After 25 minutes she has gone 1.5 miles. If she continues at the same pace, how long in minutes will her 8.4 mile run take?

You could use a proportion. Cross multiply and solve for x.

25/1.5 = x/8.4

To find out how long Jennifer's 8.4 mile run will take, we can use a proportion to compare the distance and time.

We know that Jennifer ran 1.5 miles in 25 minutes. Let's write this as a proportion:
1.5 miles / 25 minutes = 8.4 miles / x minutes

To solve for x (the time for the 8.4 mile run), we cross-multiply and solve for x:
1.5 miles * x minutes = 8.4 miles * 25 minutes

Now we can solve for x by dividing both sides of the equation by 1.5 miles:
x minutes = (8.4 miles * 25 minutes) / 1.5 miles

Using a calculator, we find that:
x minutes = 140 minutes

Therefore, Jennifer's 8.4 mile run will take 140 minutes.