(04.01) The Martinez family wall
an hour. What equation can be used to calculate their unit rate in miles per hour?
3/5//8/8=1 3/5miles per hour
3/8//3/5=1 3/5mies per hour
3/8//3/5=5/8miles per hour
3/5//3/8=5/8 miles per hour

Question:

The Martinez family walked three over five of a mile in three over eight of an hour. What equation can be used to calculate their unit rate in miles per hour?

mile per hour

Explanation:

Given

Distance = 3/5 mile

Time = 3/8 hour

Required

Equation to calculate their unit rate in miles per hour?

To get the equation to calculate their unit rate in miles per hour, follow the steps below;

Step 1: Determine what miles per hour represent;

We know that mile is a measure of distance and hour is a measure of time.

The ratio of these two is a measure of speed.

Hence, the question can be interpreted as write an equation to calculate their speed

Step 2: Calculate their speed

We can calculate speed using the following formula

By Substitution

The above expression is the equation that can be used to calculate their unit rate in miles per hour (in other words, their speed)

Solving this expression, we have

Convert division to multiplication

Convert to mixed fraction

Hence, the expression is mile per hour