Browse · harp
Printjmc
prealgebra junior
Problem
After school, Maya and Naomi headed to the beach, miles away. Maya decided to bike while Naomi took a bus. The graph below shows their journeys, indicating the time and distance traveled. What was the difference, in miles per hour, between Naomi's and Maya's average speeds? 
(A)
(B)
(C)
(D)
(E)
Solution
Naomi travels miles in a time of minutes, which is equivalent to of an hour. Since , her speed is mph. By a similar calculation, Maya's speed is mph, so the answer is .
Final answer
E