Question 1045655
D = rt
570 = 5(r+2) + 5r
570 = 5r + 10 + 5r
570 = 10r + 10
560 = 10r
56mph = r, slower car's speed 
58mph , the speed of the faster car {{{56 + 2}}}

CHECKING
5hr*58mph + 5hr*56mph = 290m + 280m = 570m  CHECKS