### How do you get the percentile in math?

Divide the part that you want to analyze by the whole. For example... if you're trying to find the percentage of green jellybeans as opposed to the whole jar and if there are three green jellybeans and three red jellybeans, the total amount of jellybeans is six. Divide the number of green jellybeans (3) by the total amount (3+3=6) which gives you 50%

### If 300 jellybeans cost you x dollars How many jellybeans can you purchase for 50 cents at the same rate?

If 300 jellybeans cost you x dollars. How many jellybeans can you purchase for 50 cents at the same rate? Doing this as similar ratios: 300 ... n ----- = --- ..x .....0.50 Cross multiplying you get: 150 = nx n = 150/x It depends on x, but you can buy 150/x jellybeans for 0.50. For example if you could buy 300 jellybeans for 5 dollars, you could buy (150/5) = 30 jellybeans for 0.50…