Answer:2688.63 miles
Step-by-step explanation:
Given
The distance from Paris to Los Angeles
Wind traveling at 100 mph from Los Angeles to Paris
The velocity of the plane through still air is
Relative velocity of Plane A is
since Plane A is heading against the wind
Relative velocity of Plane B is
Plane A departs at noon
Distance covered by Plane A in 1 hour
The total separation distance between the planes is
Assuming they meet after t hours
Distance covered by Plane B in that time frame
Distance traveled by Plane A in t hours is
The total distance equals 4550 miles
Distance traveled by B is
thus, they meet at a point 2688.63 miles away from Los Angeles.