Problema Solution
It takes Tamika between 30 and 45 minutes to drive the 24 miles to work. How fast is Tamika going on her drive to work (in mph)?
Answer provided by our tutors
since speed = distance/time we have time = distance/speed
30 min <= distance/speed <= 45 min
30 min <= 24/v <= 45
24/45 <= v <= 24/30
8/15 <= v <= 4/5
0.533 <= v <= 0.8
Tampika is going with a speed in the interval [0.533, 0.8].