At a baseball game , jose bought five hot dogs and three sodas for $17. at the same time, allision bought two hot dogs and four sodas for $11. find the cost of one hot dog and one soda.

 Let d = cost of hotdog
Let s = cost of soda
5d + 3s = 17
2d + 4s = 11   d = $2.50
s = $1.50
Check:5(2.5) + 3(1.5)=17
12.5 + 4.5 = 17
17 = 172(2.5) + 4(1.5) = 11
5 + 6 = 11
11 = 11 I have done this problem befoore and this is how i work it out

This a very hard question about this place and this company does the right thing and the company always makes you think you can do what black

Best answer that i found on yahoo ok   set :   x= length of 2nd piece in cm  x- 3= length of 1st piece in cm  x-4= length of 3rd piece in cm  then since you know they all came from the 20 cm ribbon you add them together and set them equal to 20x+ x-3 +x-4 = 20  3x - 7= 20  3x= 27  x= 9  the shortest piece is the third piece which is x- 4  x-4  9-4 = 5  the length of the smallest piece is 5 cm.  the other lengths are  9 cm  6 cm