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Morgarella [4.7K]
3 years ago
9

Each week, Rosario drives to an ice skating rink that is 120 miles away. The round-trip takes 2.75 hours. If he averages 55 mile

s 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?
Mathematics
1 answer:
kari74 [83]3 years ago
6 0
While going to the ice skating rink,
Rosario drives a distance of 55 miles in = 1 hour
Then
While going to the ice skating rink,
Rosario drives a distance of 120 miles in = (1/55) * 120 <span>                                                                                                         = 2.18 hours</span>
The number of miles per hour Rosario averages while coming back home = x Total up and down time taken by Rosario = 2.75 hours
Then time taken by Rosario to come back
home from ice skating rink = (2.75 – 2.18) hours <span>                                                     = 0.57 hours</span>
Then we can write the equation as
 x = 120/0.57 miles/hour <span>  
    = 210.53 miles/hour</span>
<span>So the average speed of Rosario while coming back home from ice skating rink is 210.53 miles per hour.</span>
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