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two turkey burgers and a bottle of water cost $3.25. If three turkey burgers and a bottle of water cost $4.50,What is the cost of tw bottles of water?

Respuesta :

rorycampbell0721

Answer:

$1.50

Step-by-step explanation:

let b be the number of turkey burgers and w be the number of bottles of water.

[tex]2b + w = 3.25\\3b + w = 4.50[/tex]

becomes

[tex]3b + w = 4.50\\- (2b + w)=3.25[/tex]

[tex]b = 1.25[/tex]

substitute this into one of the original equations:

[tex]3b + w = 4.5\\3 * 1.25 + w = 4.5\\3.75 + w = 4.5\\w = 0.75[/tex]

two bottles of water equals 0.75 * 2 = 1.50