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Percentage and inequality

There are two salad dressings A and B. Dressing A contains 60% olive oil and 40% vinegar, while dressing B contains 10% olive oil and 90% vinegar. Andrew mixes 500 mL old dressing A with x mL of dressing B. What is the minimum value of x such that the mixture contains at least 50% vinegar? The answer is 125 but I need the steps thx

解答 0

  • eric
    2020-01-01 21:34:45
    Solve 0.4×500+0.9x=0.5(500+x)
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