Vehicles A and B are traveling towards each other from A and B at the same time, and meet at a distance of 50 kilometers from A. After arriving at the starting point of the other party, they immediately return at the original speed and meet again at a distance of 40 kilometers from A. What is the distance in miles between A and B?
甲、乙两车同时从A、B两地相向而行，在距离A地50千米处相遇，到达对方出发点后，立即以原来速度原路返回，又在离A点40千米处相遇．A、B两地的距离是多少千米．
<gadget id="calculator">4_500 - 4_500</gadget>
<output>0</output>

<gadget id="calculator">0 + 190</gadget>
<output>190</output>

<gadget id="calculator">190 / 2</gadget>
<output>95</output>

<result>95</result>