Question 555279
{{{D=rt}}} Start with the distance-rate-time formula.



{{{150=r*2}}} Plug in {{{D=150}}} and {{{t=2}}}.



{{{150/2=r}}} Divide both sides by 2 to isolate 'r'.



{{{75=r}}} Divide {{{150/2}}} to get {{{75}}}.



{{{r=75}}} Rearrange the equation.



So the average speed is 75 kilometers per hour.


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