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Find the unit rate 75 miles miles in 1 1/2

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2 Answers

75 miles in 1 1/2 hours
find the unit rate
75/(1 1/2)=75/(3/2)=(75)(2/3)/(3/2)(2/3)
                              =(75)(2/3)/1
                              =(75)(2/3)   
(75)(2/3)=(75*2)/3
              =150/3
              =50 miles/hour
you can also simplify:(75/3)*2=25*2=50
you can also change 1 1/2 to 1.5 which gives 75 miles/1.5 hours
75 miles/1.5 hours=750 miles/15 hours=50 miles/hour
Mickey.
            I am working on the premise that we are speaking about 1 1/2 hours.
 
You can solve a  question dealing with distance ,time and speed by using the formula
 
D=RT where D = distance R = rate ( speed ) T = time
 
You can solve for any variable if you have the other two
 
D=RT if you are looking for the distance
 
R=D/T if you are looking for the rate or speed
 
T=D/R if you are looking for the time.
 
So plug in the two figures you have and solve for the variable that you are searching for.
 
I hope this helps.