The Griswalds averaged 45 mph on their way to Las Vegas and 60 mph on the way back home using the same route?
mrs. Vee asked:
The Griswold’s averaged 45 mph on their way to Las Vegas and 60 mph on the way back home using the same route. Find the distance from their home to Las VEgas if the total driving time was 70 hours.
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The Griswold’s averaged 45 mph on their way to Las Vegas and 60 mph on the way back home using the same route. Find the distance from their home to Las VEgas if the total driving time was 70 hours.
March 4th, 2009 at 11:17 am
t1 + t2 = 70
d = 45t1 = 60t2
t2 = (45/60)t1 = (3/4)t1
t1 + (3/4)t1 = 70
(7/4)t1 = 70
t1 = 40 hours
d = 45*40 = 1800 miles