he will have 18 because both of them could be divided by 18 and its the highest number
Answer: 61.6
Step-by-step explanation:
Use a calculator if you search it up and plug in the number it’ll give you the answers
55mph.
you can solve it using the equation distance=speed x time
your total distance is 714, and you have 2 trains, one traveling some speed, x, and one traveling x+8, both traveling for 7 hours.
your equation would look like this

and you can then solve for x, which would be 47. this is the speed of the slower train, but 47+8=55 with give you the speed of the faster train.