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786

Q:

An alloy of copper and aluminum has 40% copper. Another alloy of Copper and Zinc has Copper and Zinc in the ratio 2: 7. These two alloys are mixed in ratio 5:3. Quantity of aluminum is what percent more/less than the quantity of copper in final alloy.

  • 1
    $$ {11 {1\over 9}{\%}}$$
  • 2
    $$ {11 {1\over 3}{\%}}$$
  • 3
    12 %
  • 4
    13 %
  • 5
    12.5 %
  • Show Answer
  • Workspace

Answer : 5. "12.5 %"

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