Respuesta :
Answer:
The correct answer is (A). Copper and aluminum in the ratio of 10:1 means 10 parts copper to 1 part aluminum.
Step-by-step explanation:
7 pounds of aluminum in aluminum bronze by by weight.
What is Ratio?
Ratio is defined as a relationship between two quantities, it is expressed one divided by the other.
What is percentage?
The percentage is defined as the ratio expressed as a fraction of 100.
The percentage is denoted by sign of %.
For example, if XYZ scored 46% marks in his test, it means that he scored 46 marks out of 100. It is written as 46/100 in the fraction form and 46:100 in terms of ratio.
Aluminum bronze consists of copper and aluminum in the ratio of 10:1 by weight
The ratio of copper and aluminum in aluminum bronze = 10:1
Let, aluminum in aluminum bronze by weight = x pound
And copper in aluminum bronze by weight = 10x pound
Since object made of this alloy weighs 77 pounds
So, x + 10x = 77
11x = 77
x = 7
Hence, 7 pounds of aluminum in aluminum bronze by by weight
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