SOLUTION: A is chasing B. They are separated by 18 miles and A is traveling at 300 mph and B is traveling at 240 mph. If the aircraft fly for 7 minutes, how far behind is A?

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Question 976391: A is chasing B. They are separated by 18 miles and A is traveling at 300 mph and B is traveling at 240 mph. If the aircraft fly for 7 minutes, how far behind is A?
Answer by josgarithmetic(39625) About Me  (Show Source):
You can put this solution on YOUR website!
A, B, aircraft,... what?

Give the full problem description and question.

(Enough now understood)
The description does not say, "catch up"; but only asks what is their separation in distance after 7 minutes.

___________________rate___________time__________distance
craftA_____________300_____________7____________A
craftB_____________240_____________7____________B

A and B are also being used in this solution as the distances gone, for each aircraft. Note that you can make a number line to show the relative initial positions of craft A and craft B.

system%28A=300%2A7=2100%2CB=240%2A7=1680%29.

Zero on the number line is where A starts. 18 on the number line is where B starts. Each goes in the same direction, toward the greater values of the number line.

aircraft A: went 2100 miles ON THE NUMBER LINE.
aircraft B: went to 1680+18=1698 ON THE NUMBER LINE, since it started AT 18.

The separation now is that A is AHEAD of B by 2100-1698=402 miles.