Car A began a journey from a point at 9 am, traveling at 30 mph. At 10 am car B started traveling from the same point at 40 mph in the same direction as car A. At what time will car B pass car A?

Question

ahsome · Answer

First of all, find the distance between car A and B when car B starts to travel. he is moving at 30mph, for one hour. @inowalst. What is this distance?

inowalst · Answer

I dont know..

ahsome · Answer

Ok. Car A is travelling 30mph, right? After one hour, car B starts traveling 40mph. How much time did Car A drive before Car B started?

inowalst · Answer

10 miles less than Car B.

ahsome · Answer

Why 10 miles?

inowalst · Answer

Because A is 30mph and B is 40mph..

inowalst · Answer

I dont know. I'm confused with this question..

ahsome · Answer

Ok. Lets see.
Car A starts driving 30kmph at 9 oclock, right?

Then, Car B stars driving 40mph at 10oclick, right?
How much time did Car A drive, before car B started to drive (difference in time)

inowalst · Answer

Hmmm, if they both start at 1 mile, then Car A traveled 2 miles, while Car B traveled 1.

ahsome · Answer

(difference in time)

inowalst · Answer

Car A traveled 2 hours, while Car B traveled 1.

mathmath333 · Answer

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