After 300 miles.
35+0.1x= 25+0.15x
-0.1x -.01x (0.1- 0.1 crosses out)
35= 25+0.15x
-25 -25 (25- 25 crosses out)
15= 0.15x
15/0.15= 0.15x/0.15 (crosses out)
300= x
9.4m questions
12.2m answers