Two busses leave school moving in opposite directions. After 15 minutes, they are both 10 miles away from the school. Which statements correctly describe the motion of the busses

the buses are going 40 mph, I'm not sure if this is correct.

Both buses are going the same speed of 40 miles per hour.

Step-by-step explanation:

One hour divide by 15 minutes - 60/15 = 4

Since they are driving 10 miles per 15 minutes then 4 * 10 = 40