percentage
posted by Leon .
you have 50 students one day and 70 the next what is the percentage increase

percentage 
Enviromental Problems
I think it is 20%. Because a each tenth is 10% and 7050 equals a 20% increase. so i'm sure its 20%

percentage 
Ms. Sue
Sorry, but Environmental is wrong.
7050 = 20 student increase
20/50 = 0.4 = 40% increase
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