There are three cars A, B, and C driving from A to B at a certain speed. B starts 10 minutes later than C, and catches up with C 35 minutes after departure; A starts 20 minutes later than B, and after departure 1 Overtake C in 15 hours. Then how many minutes does it take for A to catch up with B after starting off?
有甲、乙、丙三辆汽车各以一定的速度从A地开往B地，乙比丙晚出发10分钟，出发后35分钟追上丙；甲比乙又晚出发20分钟，出发后1小时15分追上丙．那么甲出发后需要多少分钟才能追上乙．
<result>225</result>