Answer:
6
Step-by-step explanation:
Take the total length of the train and divide by the length of each car
15 3/4 ÷ 2 5/8
Change each number to an improper fraction
15 3/4 = (4*15 +3) /4= 63/4
2 5/8 = ( 8*2 +5)/8 =21/8
63 /4 ÷ 21/8
Copy dot flip
63/4 * 8/21
Rewriting
63/21 *8/4
3*2
6
