Question 253626
This question requires unit conversions or unit rates. The question is:
{{{4 miles  / 3 minutes}}}.
We convert minutes to hours.
60 minutes = 1 hour, so we write
{{{(4 miles  / 3 minutes) * (60 minutes / 1 hour)}}}
Notice minutes in the denominator and then minutes in the numerator. We can cancel them to get miles / hr as
{{{(4 * 60 / 3) = (80 mi / hr)}}}