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
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
Similar questions
Science,
2 months ago
English,
5 months ago
World Languages,
5 months ago
Math,
11 months ago
Physics,
11 months ago