inderpreet
Answered

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Two friends take a drive around the city. When they get home, they look at the odometer and their watches, and determine they traveled 54 miles in 72 minutes. What was their average speed in miles per hour?

Sagot :

ProjectTermina
the question asks for the speed in miles per hour, so first thing we have to do is convert 72 minutes into hours by dividing by 60: 1.2 hours.
speed = distance / time
speed = 54 miles / 1.2 hours
speed = 45 miles/hour aka miles per hour aka mph
Rodeway
x miles per hour means that  x miles / 60 minutes 
If they traveled 54 miles / 72 minutes, so:
72 minutes - 60 minutes = 12 minutes 
[tex] \frac{12}{60} = 0,2[/tex]
60 minutes = 1 
12 minutes = 0,2  
1 + 0,2 = 1,2 hour
V = s/t 
v - velocity or speed
s - linear distance traveled 
t - time, so...
 we must divide 54 miles by 1,2 hour = [tex]54:1,2= 45 [/tex]
Now, as we all know...
Their average speed was 45 miles per hour.
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