SOLUTION: A 30 oz can of lemonade drink mix costs $1.80. At that rate, how much will a 21 oz can cost?

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Question 1032644: A 30 oz can of lemonade drink mix costs $1.80. At that rate, how much will a 21 oz can cost?
Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
We can solve this using a proportion:
30%2F1.80+=+21%2Fx
Now cross-multiply and get
30x = 21(1.80)
30x = 37.80
Now divide by 30 and get
x = $1.26