Question 153046
Let's call the time from Center to New, T.
1.{{{220T=D}}}
The return trip took 1 hour less, or T-1.
2.{{{250(T-1)=D}}}
Since they're both equal to D, they're equal to each other.
{{{220T=250(T-1)}}}
{{{220T=250T-250)}}}
{{{-30T=-250}}}
{{{T=8.33}}}
Using eq. 1,
{{{220(8.33)=D}}}
{{{D=1833}}}
It is 1833 miles from New City to Center City.