Question #1456

Eighty pounds of a 54% copper alloy is mixed with 200 lb of a 22% copper

alloy. Find the percent concentration of the resulting mixture. Round to

the nearest tenth of a percent.

alloy. Find the percent concentration of the resulting mixture. Round to

the nearest tenth of a percent.

Expert's answer

Let's find the mass of copper alloy in the resulting mixture:

80*0.54 + 200*0.22 = 87.2 lb

The total mass of the mixture:

200 + 80 = 280 lb

The concentration of the copper alloy would be

100%*87.2/280 =**31.1 %**

80*0.54 + 200*0.22 = 87.2 lb

The total mass of the mixture:

200 + 80 = 280 lb

The concentration of the copper alloy would be

100%*87.2/280 =

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