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Ashley left the hospital and traveled toward her friend's house. Emily left one hour later traveling at 60 mph in an effort to catch up to Ashley. After traveling for four hours Emily finally caught up. Find Ashley's average speed.

 Jul 30, 2021
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Emily had a closing speed equal to the differences in speed    60 - x   m/hr     where x = Ashley speed

 

Ashley was   x   miles ahead

 

x/(60-x) = 4 hours

x = 240 - 4x

5x = 240

x = 48 m/hr     =    Ashley's speed

 Jul 30, 2021

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