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During a 40 mile trip, Malra traveled at an avg. speed of x miles an hour for the first y miles of the trip and at an avg speed of 1.25x miles an hour for the last 40-y miles of the trip. The time that Marla took to travel the 40 miles was what % of the time it would have taken her if she traveled at an avg speed of x miles an hour for the entire trip?
1) x = 48
2) y = 20
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During a 40 mile trip, Malra traveled at an avg. speed of x miles an hour for the first y miles of the trip and at an avg speed of 1.25x miles an hour for the last 40-y miles of the trip. The time that Marla took to travel the 40 miles was what % of the time it would have taken her if she traveled at an avg speed of x miles an hour for the entire trip?
1) x = 48
2) y = 20
time to travel the 40 miles = ( 0.25y+40) / 1.25x
if condition time = 40/x
divide one by two you end up with
(40+0.25y ) / 1.25...........
Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Still interested in this question? Check out the "Best Topics" block above for a better discussion on this exact question, as well as several more related questions.