Question

4.5 gram of an alloy of Copper and Zinc containing 3.5 gram of copper . what weight of copper will there be in 18.9 gram of the alloy ? ​

Answer 1

Answer:

14.7 g of copper will there be in 18.9 g of alloy.            

Step-by-step explanation:

Given : 4.5 g of an alloy of copper and zinc contains 3.5 g of copper.

To find : What weight of copper will there be in 18.9 g of alloy?

Solution :

According to question,

Applying Unitary method,

4.5 g of an alloy of copper and zinc contains 3.5 g of copper.

1 g of an alloy of copper and zinc contains \frac{3.5}{4.5} g of copper.

18.9 g of an alloy of copper and zinc contains \frac{3.5}{4.5}\times 18.9 g of copper.                                                                                                                  18.9 g of an alloy of copper and zinc contains 14.7 g of copper.           Therefore, 14.7 g of copper will there be in 18.9 g of alloy.