She'll have traveled approximately 431.07 km in 8.5 hours, also, 267.85448 miles per hour.
Only 3 is needed
Step-by-step explanation:
24 + 0.44x = 19 + 1.69x
Subtract 19 from both sides
5 + 0.44x = 1.69x
Subtract 0.44x from both sides
5 = 1.25x
Divide by 1.25 on both sides
4 = x