NCERT Exemplar Solutions
Class 6 - Mathematics - Unit 8: Ratio & Proportion - Problems and SolutionsQuestion 71
Class 6 - Mathematics - Unit 8: Ratio & Proportion - Problems and Solutions
Question. 71
An alloy contains only zinc and copper and they are in the ratio of 7 : 9. If the weight of the alloy is 8 kg, then find the weight of copper in the alloy.
Answer:
4\(\tfrac{1}{2}\) kg
Detailed Answer with Explanation:
Total parts = 7 + 9 = 16. Copper = (9/16)×8 = 4.5 kg = 4\(\tfrac{1}{2}\) kg.