Jerrod’s family drove 1,778 miles from Denver, Colorado, to New York City. They averaged 61.7 miles per hour on the trip. Which is the best estimate of the number of hours the family drove?

Given parameters:

Distance traveled  = 1778miles

Average speed  = 61.7 miles per hour

Unknown:

Time taken for the travel = ?

Speed is a physical quantity. It is the rate of change of distance with time.

 It can be mathematically expressed as;

           Speed  =

  The unknown here is the time taken;

   Substitute the parameters and solve for it;

      61.7  =

          time taken  =   = 28.8hrs

The time taken is  28.8hrs

a variable is any characteristics, number, or quantity that can be measured or counted. a variable may also be called a data item. hope i !