A word problem on speed

Speed is the rate of motion, or equivalently the rate of change of distance.
Speed is a scalar quantity with dimensions length/time; the equivalent vector quantity to speed is velocity. Speed is measured in the same physical units of measurement as velocity, but does not contain the element of direction that velocity has. Speed is thus the magnitude component of velocity.
In mathematical notation, if an object traveling at constant speed moves a distance x in time t, its speed, denoted by v, is simply given by

Let's see how to find speed


Question:-

If George travels 12 miles and his car averages 50 miles per hour, how long will it take George to complete the distance? Express this situation in an equation, making "t" the variable for time.

a. 12 x t = 50

b. 50 x t = 12

c. 50 ÷ 12 = t


Answer:-

Distance =12 miles

speed =50 miles per hour

Time=t

      Distance
speed= --------
        Time

plug in value and we get

         12  
50 x t = ---- x t
          t

 50t=12

So the choice 'B' is correct.

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