SOLUTION: Sam and Tim both left town X for town Y at the same time and did not change their speeds throughout the journey. The distance between the two towns is 375 km. Tim reached Town Y at

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Question 1039972: Sam and Tim both left town X for town Y at the same time and did not change their speeds throughout the journey. The distance between the two towns is 375 km. Tim reached Town Y at 3pm and Sam reached Town Y at 4pm. What was the difference in their average speed?
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
Time difference was 1 hour, and the travel times are unknown. Tim reached the destination first and this means his speed was faster than Sam's. Tim's travel time was one hour longer.
PERSON       SPEED        TIME      DISTANCE
Sam          r+k          t          375
Tim          r            t+1        375


Not enough information. Three unknown variables but only information for two equations.