MATRIX WORD PROBLEM

J

JOSH BAR

New member
Joined
Sep 29, 2009
Messages
36
The chart shows the amount spent by five U.S. airlines to fly one available seat one mile in the fourth quarter of a year. Suppose that, on a 3000-mile New York-Los Angeles flight, United, American and SouthWest flew a total of 210 empty seats, costing them a total of $66,024. Below there is the chart, which shows the amount spent by five U.S. airlines to fly one available seat one mile in the fourth quarter of 2000. If United had three times as many empty seats as American, how many empty seats did each of these three airlines carry on its flight?
United _______
American _______
SouthWest ________

Airline United American Continental SkyWest SouthWest
Cost 11.3 10.8 9.9 20.3 7.7

It seems to me like much of this information is irrelevant, all I need is help on how to set up this matrix. Thanks
 


Exactly what information do you think is relevant?

Are you thinking at all?

Read the post titled "Read Before Posting", and follow the requirements listed therein when seeking guidance at this site, OR go somewhere else for help.

Got the message?

 
JOSH BAR said:
The chart shows the amount spent by five U.S. airlines to fly one available seat one mile in the fourth quarter of a year. Suppose that, on a 3000-mile New York-Los Angeles flight, United, American and SouthWest flew a total of 210 empty seats, costing them a total of $66,024. Below there is the chart, which shows the amount spent by five U.S. airlines to fly one available seat one mile in the fourth quarter of 2000. If United had three times as many empty seats as American, how many empty seats did each of these three airlines carry on its flight?
United _______
American _______
SouthWest ________

Airline United American Continental SkyWest SouthWest
Cost 11.3 10.8 9.9 20.3 7.7

It seems to me like much of this information is irrelevant, all I need is help on how to set up this matrix. Thanks
Click to expand...

You are correct - "some" of the information is irrelevant?

But which ones?

Tell us which information are relevant.

First define your unknowns - from "what they are asking for"?
 
Look, pal it would cost the three airlines on a 3,000 mile trip with only one empty seat each:

(11.3)(3,000)+(10.8)(3,000)+(7.7)(3,000) = $89,400

Now how do you figure with 210 empty seats it only cost the airlines $66,024 on a 3000 mile trip??
 
Already got it, you have to multiply the interest times the 3000 so you get your amounts for the final 3rd row of the matrix.
 
You must log in or register to reply here.
Top