The number of pounds of copper in 120 pounds of brass is = 78 pounds of copper
<h3>Calculation of number of pounds of copper</h3>
The percentage of copper in the brass = 65%
Therefore the quantity of copper in the brass = 65/100= 0.65 pounds
This means that 1 pound brass contains = 0.65 pounds of copper
The quantity of copper in 120 pounds of brass = 120 * 0.65
= 78 pounds of copper.
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<span><span>
q−9</span>=12
</span>Step 1: Add 9 to both sides.
<span><span><span>q−9</span>+9</span>=<span>12+9
</span></span><span>q=21
</span>Answer:
<span>q=21</span>
Answer:
-4,5
Step-by-step explanation:
