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Elaine drives her car 180 miles and has an average of a certain speed. If the average speed had been 5mph more, she could have traveled 200 miles in the same length of time. What was her average speed?

 Feb 21, 2021

Best Answer 

 #1
avatar+31281 
+2

180 m / x m/hr   =   200 / (x+5)

cross multiply

180x + 180(5) = 200x

x = 45 m/hr    for 180 miles

 Feb 21, 2021
 #1
avatar+31281 
+2
Best Answer

180 m / x m/hr   =   200 / (x+5)

cross multiply

180x + 180(5) = 200x

x = 45 m/hr    for 180 miles

ElectricPavlov Feb 21, 2021

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