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A coin contains 1.25 grams of nickel and 3.75 grams of copper, for a total weight of 5 grams. What percent of the metal in the coin is copper? (Ignore the % symbol when entering your answer. For example, if the answer is 11%, enter 11. )

A coin contains 11.2525 grams of nickel and 33.7575 grams of copper, for a total weight of 55 grams. What percent of the metal in the coin is copper?\newline(Ignore the % \% symbol when entering your answer. For example, if the answer is 11% 11 \% , enter 1111 .)

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Q. A coin contains 11.2525 grams of nickel and 33.7575 grams of copper, for a total weight of 55 grams. What percent of the metal in the coin is copper?\newline(Ignore the % \% symbol when entering your answer. For example, if the answer is 11% 11 \% , enter 1111 .)
  1. Calculate Percentage: To find the percentage of copper in the coin, we need to divide the weight of the copper by the total weight of the coin and then multiply by 100100 to convert it to a percentage.\newlineCalculation: (Weight of copper/Total weight of coin)×100(\text{Weight of copper} / \text{Total weight of coin}) \times 100\newlineMath error check:
  2. Given Values: We have the weight of copper as 3.753.75 grams and the total weight of the coin as 55 grams.\newlineSubstitute the values into the formula: (3.75/5)×100(3.75 / 5) \times 100\newlineMath error check:
  3. Division Calculation: Perform the division: 3.75/5=0.753.75 / 5 = 0.75\newlineMath error check:
  4. Multiply Result: Now, multiply the result by 100100 to find the percentage: 0.75×100=750.75 \times 100 = 75\newlineMath error check:

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