Then 95x+85x=270.

180x=270

x= 1.5

95x= 142.5

A: After 1.5 hours, the two cars met on the way, and the meeting place was at the distance of Shanghai 142.5 kilometers.

It takes x minutes.

Then 280x-240x=400.

40x=400

x= 10

A: 10 minutes later, A ran one lap more than B.