Answer:
Car B will catch Car A in 9 hours
Distant = 720 miles
Step-by-step explanation:
After 3 hours, Car A traveled 3 * 60 = 180 miles and you need to find the time when both have traveled the same distant
180 + 60x = 80x
180 = 20x
x = 9
Distant = 80 * 9 = 720 miles