Problema Solution
Julia can finish a 20-mile bike ride in 1.2 hours. Katie can finish the same bike ride in 1.6 hours. How much faster does Julia ride than Katie?
Answer provided by our tutors
The average speed of Julia is:
v1 = 20/1.2
The average speed of Katie is:
v2 = 20/1.6
We will find the difference in speed bu subtracting v2 from v1:
v2 - v1 = 20/1.2 - 20/1.6 = 4.17 mph
Julie rides 4.17 mph faster than Katie.