Multiple choice

Zinc and copper are melted in the ratio 3 : 2. If 45 kg of zinc has been consumed in this, then what is the weight of the melted mixture?

  1. 70 kg

  2. 75 kg

  3. 80 kg

  4. 65 kg

  5. 60 kg
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Ratio 3:2. Zinc = 3 parts = 45 kg. 1 part = 15 kg. Total mixture = 3 + 2 = 5 parts = 5 * 15 = 75 kg.

AI explanation

The given ratio of zinc to copper is 3 : 2, meaning zinc constitutes 3 parts of the total mixture. Since 3 parts equal 45 kg, 1 part equals 15 kg. The total weight of the mixture represents 5 parts (3 + 2), so multiplying 5 by 15 kg gives the total weight of 75 kg.

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