SOLUTION: In the 7th grade at the middle school only 1/4 of the students have a study hall. of those that do not have a study hall, 1/6 take band class. of the rest of the students 2/3 take
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Question 403082: In the 7th grade at the middle school only 1/4 of the students have a study hall. of those that do not have a study hall, 1/6 take band class. of the rest of the students 2/3 take chorus. this leaves 50 students who don't have any of these activities. How many students are there in the 7th grade? Answer by solver91311(24713) (Show Source):
50 must be 1/3 of those who take chorus or have nothing. So those that take chorus must number 100. Then 150 must be 5/6 of those that have band, chorus, or nothing, so there must be who have have band, chorus, or nothing. Then 180 is 3/4 of everyone.
John
My calculator said it, I believe it, that settles it
