Mathematics
Grade6
Easy
Question
A metal bar weighs 8.15 ounces. 93% of the bar is silver. How many ounces of silver are in the bar? (Round to the nearest thousandth)
- 7.5795
- 7.9878
- 7.867
- 7.999
Hint:
1. When a certain quantity is divided into 100 equal parts and a certain part of it is to be expressed in terms of the whole quantity, that portion is called as a percent, represented with a % sign.
2. Percentage of silver = Weight of silver/ Total weight of metal bar * 100.
The correct answer is: 7.5795
Given-
Percentage of silver = 93%
Total weight of metal bar = 8.15 ounces
To find-
Weight of silver in the metal bar (in ounces)
Solution-
We know that-
Percentage of silver = Weight of silver/ Total weight of metal bar * 100
∴ 93 = Weight of silver/ 8.15 * 100
∴ 93 * 8.15 / 100 = Weight of silver
∴ 7.5795 ounces = Weight of silver
Final Answer- Option 'a' i.e. '7.5795' is the correct answer to the given question.
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