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RS Aggarwal Solutions Class 6 Mathematics Solutions for Ratio, Proportion and Unitary Method. Exercise 10C in Chapter 10 - Ratio, Proportion and Unitary Method.
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4.5 g of an alloy of copper and zinc contains 3.5 g of copper. What weight of copper will there be in 18.9 g of the alloy?
Answer:
Given 4.5 g of an alloy of copper and zinc contains 3.5 g of copper
For 1 g of an alloy will contain = 3.5 / 4.5
= 0.777 g of copper
1 g of an alloy will contain 0.777 g of copper
For 18.9 g of an alloy contain = 0.777 × 18.9
= 14.7 g of copper
Hence, 18.9 g of an alloy contains 14.7 g of copper
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