b) 75 2/5% of 200. *whatever you do to one side, you do to the other*
2/5 is equal to 0.4 so now it's 75.4%
The answer is 110.8
c. 250% of $76.50 *whatever you do to one side, you do to the other*
The answer is $191.25
10. When water freezes, its volume increases by approximately 10%.
a) How much does the volume of 750ml of water increase when it freezes?
Since the percent is 10 and the question stated that the amount increases, to find out how much it would increase you just divide it by the percent.
b) Sorry, I don't understand this one! If any of you do please comment and explain!
14. 4% of 100 is the same as 8% of what number? Explain how you arrived at your answer.
The answer is 50. Since 4% is half of 8%, you just take the 100 and figure out what half of that number would be. Another example would be 5% of 200 is the same as 10% of what number? The answer would be 100.
Here is a link to a game you can play to practice finding percentages!
Don't forget to play MangaHigh! (: