Each week, Rosario drives to an ice skating rink that is 60 miles away. The round-trip takes 2.75 hours. If he averages 55 miles per hour on his way to the rink, which equation can be used to find x, the number of miles per hour he averages on his way home? Each week, Rosario drives to an ice skating rink that is 60 miles away. The round-trip takes 2.75 hours. If he averages 55 miles per hour on his way to the rink, which equation can be used to find x, the number of miles per hour he averages on his way home?
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4
Answer:
Average speed to Home = x = 36.1 Miles/hour
Step-by-step explanation:
Average speed to the rink = 55 miles/hour
Distance between Rink and house = 60 miles.
Total round time = 2.75 Hours.
Average speed to Home = x miles /hour
Total round trip time = Time to Rink + Time back to Home
Time = Distance/Average speed
Total round trip time = (Distance/Average speed to Rink) + (Distance/Average speed to Home)
2.75 = 60/55 + 60/x
2.75 = (60x +55*60)/55x
151.25x = 60x + 3300
91.25x = 3300
x = 36.1 Miles/hour
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Answer:
A
Step-by-step explanation:
on edgenuity
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