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EXOEXOEXO
 one year ago
it took matt twice the time to drive from home to work as it took him to drive back home from work by the same route. if matt averaged 30 miles per hour(mph) on his drive to work, his average speed for the entire round trip was?
EXOEXOEXO
 one year ago
it took matt twice the time to drive from home to work as it took him to drive back home from work by the same route. if matt averaged 30 miles per hour(mph) on his drive to work, his average speed for the entire round trip was?

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok so if it was 2 times as fast what would his drive backs mph be?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so since you have both of them how do you find the average

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yea so 45 would be it :)

EXOEXOEXO
 one year ago
Best ResponseYou've already chosen the best response.0but its not an answer choice

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0what are the choices???

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0lol its not twice as fast its twice as slow

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@dan815 am i right in saying (15+30)/2 sorry im tired

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0lol wait i think im just being dumb

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0no wait im not it would be 22.5 mph are you sure thats the whole question

EXOEXOEXO
 one year ago
Best ResponseYou've already chosen the best response.0I think it is a 30+2(15)/2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0no then that would just be 30

EXOEXOEXO
 one year ago
Best ResponseYou've already chosen the best response.030 mph is the average on Matt's drive to work while 15 mph is the average of Matt's drive to home from work

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0because he took twice as long using the same rounte meaning he was twice as slow (15 mph) and the other was 30 so the avarage of that is 22.5mph

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so basicly in the context of the problem x= matts time from work so (x+(x/2))/2= avg

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0although its not a choice it is the right answer for what you gave me

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0haha yea unless you made a typing error??

EXOEXOEXO
 one year ago
Best ResponseYou've already chosen the best response.0I don't think I made one

whpalmer4
 one year ago
Best ResponseYou've already chosen the best response.0How long does it take him to drive to work? How long does it take him to drive home? Add them together to get the round trip time. Average speed for the round trip is round trip distance divided by round trip time.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yea but thats not a choice :(

whpalmer4
 one year ago
Best ResponseYou've already chosen the best response.0That's all the information you need to calculate the answer... Let the distance to work be \(x\). Time to drive to work is \(x/30\). Time to drive home is \((1/2)*(x/30)\) Total distance driven is \(2x\) Average speed for trip is total distance driven divided by total time.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yea i know that and you would get 22.5 but thats not an answer choice for him

whpalmer4
 one year ago
Best ResponseYou've already chosen the best response.0No, 22.5 is not the result of that calculation, correctly done.

whpalmer4
 one year ago
Best ResponseYou've already chosen the best response.0Time to drive to work is \[\frac{x}{30}\] Time to drive home is\[\frac{1}{2}*\frac{x}{30} = \frac{x}{60}\] Total time driving is \[\frac{x}{30}+\frac{x}{60} = \frac{3x}{60} = \frac{x}{20}\] average speed is \[\frac{2x}{\frac{x}{20}}=2x*\frac{20}{x} = \]

whpalmer4
 one year ago
Best ResponseYou've already chosen the best response.0Or, pick a distance, any distance, and work out the problem. Let's say it is 60 miles to work, to make the arithmetic easy. 60 miles at 30 miles per hour = 2 hours to drive to work Driving home takes 1/2 the time, so that's 1 hour to drive home. Total distance driven is 60+60 = 120 miles. Total time driving is 2+1 hours = 3 hours Average speed =
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