Two planes are flying around the world. The first plane is flying al 300 miles per hour and is 350 miles ahead of the second plane. The second plane is flying at 400 mph. How long will take for the second plane to catch the first plane?.

Question

shane_b · Answer

The distance between the planes is 350 miles and plane 2 is gaining on the first plane at a rate of 100 mph....so what do you think?

lgbasallote · Answer

let the initial distance of first plane = d
initial distance of second plane = d - 350
speed of first plane = 300
speed of second plane = 400

final distance - initial distance = speed x time
final distance = speed x time + initial distance

final distance of first plane = 300t + d
final distance of second plane = 400t + d - 350

when they catch up the final distance will be same so we can equate them to one another

300t + d = 400t + d - 350
400t - 300t = d - d + 350
100t = 350
t = 350/100
t = 3.5 hours

make sense?

anonymous · Answer

3.5 hours= 3 hours and a half right?

shane_b · Answer

Yes.

lgbasallote · Answer

yes it is

anonymous · Answer

Thank you all so very much i hope you all go to heaven! take care!