# Error in book? Please confirm.

A highway and a train track run parallel to each other. At 5:00 a train crosses a river. Fifteen minutes later, a car, traveling in the same dirrection, crosses the river. The train's average speed is 52mph, the car's is 64mph. When will the car pass the train?

15 minutes = 1/4hour, so train traveling 52mph is 13 miles away from the car over the river.

64 - 52 = The vehicles are converging at a rate of 12mph.

From D = RT, T = D/R. So,

T = 13/12

13/12 = 1 and 1/12th of an hour, or 65 minutes.

The car should pass the train in 01:05, or at 6:05.

This answer is not listed among the choices.

WTF???

5:15 + 65 mins. = 6:20...

and also, i can't help myself, maybe you would've gotten 6:20 with a graphing calculator :)

jk. although i do love my ti83

5:15 + 65 mins. = 6:20...
wow, what a dumb error on my part.

Thanks.

and also, i can't help myself, maybe you would've gotten 6:20 with a graphing calculator :)

jk. although i do love my ti83

haha, thanks.