SOLUTION: Last friday, 60% of the eighth grade class wore blue jeans. If 12 students did NOT wear blue jeans, how many students are in the class?

SOLUTION: Last friday, 60% of the eighth grade class wore blue jeans. If 12 students did NOT wear blue jeans, how many students are in the class?

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Question 364927: Last friday, 60% of the eighth grade class wore blue jeans. If 12 students did NOT wear blue jeans, how many students are in the class?
Answer by robertb(5830) (Show Source): You can put this solution on YOUR website!
let x = # students in class.
Then 40% DID NOT wear blue jeans, and this is equal to 12. Thus 0.40x = 12, or x = 30. There are 30 students in the class.
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