Answer:
3 hours
Step-by-step explanation:
Given that:
Average speed of Willie = 40 km/h
After 2 hours, Gabriella traveled in opposite direction at an speed of 70 km/h.
After some time, they are 410 km apart.
To find:
Number of hours = ?
Solution:
For the first two hours, Willie traveled alone.
Formula for distance:
[tex]Distance = Speed \times Time[/tex]
Distance traveled in two hours by Willie = [tex]40 \times 2 = 80\ km[/tex]
Now, they both travel in opposite directions.
So the relative speed is = 40 + 70 = 110 km/h
The distance traveled by them = 410 - 80 = 330 km
[tex]Time\ taken = \dfrac{330}{110} = 3\ hours[/tex]
Therefore, the time taken is 3 hours.
