The question is (it seems pretty straightforward to me)

The book says answer is 46 and my answer is 78..A train travels from point A to point Bin 46 minutes.If the distance between two points is 59.8 miles. What is the average rate of of train in miles per hour ?

Here is how i did it ...

46 min = 46/60=23/30 hrs

S=59.8

S/t = v

so

(59.8x30)/23 =78 Ans