Question

4. Show how to use​ numbers, units, and symbols precisely to solve the problem.
Find the unit rate using the rate found in the previous step.
StartFraction nothing miles divided by nothing Over 3 days divided by nothing EndFraction equals StartFraction nothing miles Over 1 day EndFraction

Answer 1

You want the unit rate (miles per 1 day) from a rate given for 3 days. In symbols:

Let the given rate be m miles per 3 days:
(m miles) / (3 days) = (m/3 miles) / (1 day).

So the unit rate = m ÷ 3 = m/3 miles per 1 day.

Example: if the rate from the previous step was 18 miles in 3 days,
StartFraction 18 miles Over 3 days EndFraction = StartFraction 18 ÷ 3 miles Over 1 day EndFraction = StartFraction 6 miles Over 1 day EndFraction.

Always keep the units (miles, days) attached when dividing.