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anonymous
 one year ago
on monday, Roger drove to work in 20 minutes. on tuesday, he averaged 15 miles per hour more, and it took him 6 minutes less to get to work. how far in miles does he travel to work?
anonymous
 one year ago
on monday, Roger drove to work in 20 minutes. on tuesday, he averaged 15 miles per hour more, and it took him 6 minutes less to get to work. how far in miles does he travel to work?

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0x = distance y = velocity x/y = 20/60 x/y+15 = 14/60 x = 11.7 miles y = 35 mph

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0first we need to convert minutes to hours as we are dealing with mph. 20 minutes = 1/3 hour and 14 minutes = 7/30 hours v = speed , x = distance v = s/t we have the 2 equations v = x / 1/3 = 3x v + 15 = x / (7/30) = 30x/7 substitute v = 3x in 2nd equation: 3x + 15 = 30x/7 21x + 105 = 30x 9x = 105 x = 11.7 miles
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