Question 20585: A certain alloy contains 5.25% copper. How much copper is there in a piece weighing 200 pounds?
Answer by mmm4444bot(95)   (Show Source):
You can put this solution on YOUR website! Hello There:
This question wants to know what 5.25% of 200 is.
Remember, the percent sign (%) means divide by one hundred. Dividing a decimal number by one hundred is easy; we just move the decimal point two places to the left.
So, 5.25% = 0.0525
To find the percentage, we multiply this 'decimal' form of the percent by 200.
0.0525*200 = 10.5
The 200-pound piece of alloy contains 10-1/2 pounds of copper.
~ Mark
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