Math, asked by InvisibleVisor, 5 months ago

Four-fifths of an alloy (which is a mixture of metals) is iron. The rest is copper. How much copper (in kg) will 6 3/4 kg of the alloy contain?

Answers

Answered by Kaylaxbarb
2

Answer: Copper = 1.35kg

Step-by-step explanation:

6 3/4 kg = 6.75kg

Iron = 4/5 x 6.75 = 0.8 x 6.75 = 5.4kg

copper = 1/5 so 0.2 x 6.75 = 1.35kg

To double check: 1.35 +5.4 = 6.75

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