How would you do this problem?

Question

A train has to travel 172 miles to the next stop. What equation can be used to determine the time, t, it takes to travel to this stop as a function of the average speed, s, of the train, where t is in hours and s is in miles per hour?

Answer 1

Keep in mind that the equation for speed is:

s = d/t where,

s:speed

d:distance

t: time.

First, we multiply both sides by time, t, to get:

st = d

Now, we solve for the time, t, by dividing both sides by the speed, s, to get:

t = d/s

We can now plug in 172 miles into the distance to get:

t = 172/s