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Mass is measured in grams, not weight.
percentage = 1/1000 1 kilogram = 1000 grams 10 kilograms = 10000 grams 10 grams/10 kilograms = 10 grams/10000 grams = 1/1000
The answer is 30 grams.
To find the percentage of 250 grams in 10 kilograms, we first need to convert both measurements to the same unit. There are 1000 grams in 1 kilogram, so 10 kilograms is equal to 10,000 grams. Then, we can calculate the percentage by dividing 250 grams by 10,000 grams and multiplying by 100. Therefore, 250 grams is 2.5% of 10 kilograms.
There are 453.592 grams in a pound, so 10 pounds would be 4535.92 grams. The density of copper, the main component of pennies, is 8.96 grams per cubic centimeter. A penny has a volume of 0.36 cubic centimeters, so 4535.92 grams of pennies would have a volume of 5050.89 cubic centimeters. With 2.5 grams per penny, there would be approximately 2023 pennies in 10 pounds, which would total $20.23.