Question

If the full question is A convenience store sells two brands of orange juice. Brand A contains 8 fluid ounces and costs $1.28. Brand B contains 12 fluid ounces and costs $1.68. What is the difference in cost, in dollars, per fluid ounce between the two brands of juice? Show your work

Answer 1

Answer:  
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"Brand B" costs 2 cents more per fluid ounce than "Brand A".   and:  
 
"Brand A" costs 2 cents less per fluid ounce than "Brand B" .
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Explanation:
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Start with "Brand A" :
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 $ 1.28 / (8 fl. oz)  =  1.28 ÷ 8 = 4/5 =  $0.16 / fl. oz. ;

[ $0.16 per fluid ounce ] .
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Now, "Brand B" :
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$ 1.68 / (12 fl. oz.) = 7/50 = $0.14 / fl. oz.

[ $0.16 per fluid ounce] 
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So, "Brand B" costs more, per fl. oz., than "Brand A".
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"Brand B" costs: 16 cents per fl. oz.

"Brand A" costs: 14 cents per fl. oz.
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16 cents  − 14 cents = 2 cents .
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 So,

 "Brand B" costs 2 cents more per fluid ounce than "Brand A".  and:

 "Brand A" costs 2 cents less per fluid ounce than "Brand B" .
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