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Rico can walk 3 miles in the same amount of time that Donna can walk 2 miles. Rico walks at a rate 2 miles per hour faster than Donna. At that rate, what is the number of miles that Rico walks in 2 hours and 10 minutes?

Guest Nov 7, 2018
 #1
avatar+91360 
+2

Let Donna's rate be R

And Rico's rate is R + 2

 

And we know that

R / [ R + 2 ]  = 2 / 3    cross-multiply

 

[ R + 2 ] * 2  =  3R

 

2R + 4  = 3R     subtract 2R  from  both sides

 

4  = R  = Donna's Rate  = 4 mph

 

And Rico's rate  =  6 mph

 

And 2 hrs 10min  =  2 + 1/6 hrs  =  13/6 hrs

 

So...Rate  * Time  = Distance

 

6 * (13/6)   =   

 

13 miles 

 

 

cool cool cool

CPhill  Nov 8, 2018
 #2
avatar+13718 
+1

Haha ....Rico is turning in 10 minute miles....THAT is NOT walking...that is jogging! cheeky

ElectricPavlov  Nov 8, 2018
 #3
avatar+316 
+2

lol you can call it fast walking cheeky

Dimitristhym  Nov 8, 2018

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