Answer:
A: 40x = 110; where x = the hour(s) the train drives
B: x = 2.75
Explanation:
A: If the train moves at 40mph, it would be multiplied by the amount of hours to get the total miles moved. With that, x is the amount of hours, which, as was said, is multiplied by the mph. To isolate x (to get what it equals), divide 40 on both sides. 110/40 = 2.75. This means x = 2.75 hours, or the train takes 2.75 hours to travel 110 miles/