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It took emily 25 min to ride Her bicycle to the repair shop in one hour and 15 minutes to walk back home. If Emily her bicycle to the repair shop in one hour and 15 minutes to walk back home. If Emily can ride her bicycle 8 km/h faster than she can walk how far is the repair shop from her house?

 Jan 16, 2020

Best Answer 

 #1
avatar+22108 
+2

Rate  *  Time = Distance

 

w = walking rate

b = biking rate = w +8

 

(w+8) * 25/60   = distance    (25/60 is the amount of hours    25 min = 25/60 hours)

w   *  1.25        = distance

 

 

(w+8) * 25/60 =  w * 1.25

25/60 w   +  8 * 25/60   = 1.25 w

3 1/3   = 1.25 w - 25/60 w

            = .8333w

 

w = 3 1/3  / .8333 = 4  km /hr         = walking speed

 

rate x time = distance

4 km/hr * 1.25  hr =   5 km   = distance between house and repair shop

 Jan 16, 2020
 #1
avatar+22108 
+2
Best Answer

Rate  *  Time = Distance

 

w = walking rate

b = biking rate = w +8

 

(w+8) * 25/60   = distance    (25/60 is the amount of hours    25 min = 25/60 hours)

w   *  1.25        = distance

 

 

(w+8) * 25/60 =  w * 1.25

25/60 w   +  8 * 25/60   = 1.25 w

3 1/3   = 1.25 w - 25/60 w

            = .8333w

 

w = 3 1/3  / .8333 = 4  km /hr         = walking speed

 

rate x time = distance

4 km/hr * 1.25  hr =   5 km   = distance between house and repair shop

ElectricPavlov Jan 16, 2020

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