OG11-PS223

Kath1985

Car A is 20 miles behind car B, which is traveling in the same direction
along the same route as car A.  Car A is traveling at a constant speed of
58 miles per hour and car B is traveling at a constant speed of 50 miles
per hour.  How many  hours will it take for car A to overtake and drive
8 miles ahead of car B?
A 1.5
B  2
C 2.5
D 3
E 3.5
答案E
OG的解釋看不太懂 想請問牛牛有沒有更好理解的算法   謝謝

jqf2416

AB用了相同的时间，但是路程不同，A比B多走了20+8 ，所以58t-50t=28    t=3.5