Question

Speed is calculated by the equation S = d/t, where S = speed, d = distance, and t = time travelled. For what amount of time (in hours) did a car travel if its speed was 75 miles per hour and it travelled a distance of 187.5 miles?

Answer 1

We get from the question the following equation:

S = d/t

We have the following informations:

Speed(S) = 75 miles /h

Distance(d) = 187.5 miles

If you plug those informations into the formula, you'll get the following:

75 miles/h = 185.5 miles/ t

Now, you just have to solve for "t". If you invert the equation, you'll get(I'm going to omit the units, to make it clearer, but don't forget about them!)

1/75 = t / 185.5

If you multiply both sides by 185.5, you'll get

185.5/75 = t

Solving this calculation, we get the final solution!

t = 185.5/75 hours = 2.47 hours