Question

Express the given quantity in terms of the indicated variable.

The time (in hours) it takes to travel a given distance at 55 mi/h; d = given distance (in mi)

Short answer

The time is $t=\frac{d}{55}$meters.

Step-by-step solution

Step 1. Concept used.

Distance formula , where

d = Distance

s = speed

t = time

Step 2. Solve the formula for t

The formula of distance is

$d=st$

Divide both sides by s:

$\begin{array}{l}\frac{d}{s}=\frac{st}{s}\\ t=\frac{d}{s}\end{array}$

Step 3. Plug the values.

Here, s = 55 mi/hr

Plug the values in the formula:

$t=\frac{d}{55}$meter