passenger car is driving from place A to place B, and a truck is driving from place B to place A at the same time. After 4 hours, the two cars meet, and after 3 hours, car A is still 45 kilometers away from place B. The truck is still 70 kilometers away from point A, how many kilometers is the distance from point A to point B?
一辆客车从甲地开往乙地，同时一辆货车同时从乙地开往甲地，4小时候两车相遇，相遇后又经过3小时，这时甲车距乙地还有45千米，货车距甲地还有70千米，甲地到乙地相距多少千米？
<result>420</result>