Multiple choice

The ratio of copper and zinc in an alloy is $9:5$. If the weight of zinc in the alloy is $9.5gm$, then weight of copper in it is ______ .

  1. $17.2gm$
  2. $17.1gm$
  3. $17.5gm$
  4. $17.4gm$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Ratio of copper to zinc is 9:5. Zinc = 9.5g. So 5 parts = 9.5g, 1 part = 1.9g. Copper = 9 parts = 9 * 1.9 = 17.1g.

AI explanation

The ratio of copper to zinc is 9 : 5, meaning copper is 9/5 times the weight of zinc. Given the weight of zinc is 9.5 gm, the weight of copper is calculated as (9 / 5) multiplied by 9.5. This calculation results in 17.1 gm.

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