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Kathy and Cheryl are walking in a fundraiser. Kathy completes the course in 5.4 hours and Cheryl completes the course in 9 hours. Kathy walks two miles per hour faster than Cheryl. Find Kathy's speed and Cheryl's speed in miles per hour.

 Mar 9, 2020
 #1
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Let x= Cheryl's speed 

 

Then, x+2 = Kathy's speed

 

Distance = (Rate)(Time)

 

5.4(x+2) = 9x

 

5.4x + 10.8 = 9x

 

           3.6x = 10.8

 

               x = 3

 

Cheryl's speed is 3 mph and Kathy's speed is 5 mph.

 

 

- charis :)) ur welcome !

 Mar 9, 2020
 #2
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Distance is same for both

rate x time = distance

 

kathy rate = Cheryl rate + 2

 

(c+2) 5.4 = c 9.    Solve for c. Cathy speed.    Then Kathy speed= c+2

 Mar 9, 2020

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