Question 470158: in a certain college class, each student received a grade of a,b,c,d or incomplete. in this class, 1/6 of teh students received a's, 1/4 received b's, 1/3 received c's, and 1/6 received d's. if three students recieved grades of incomplete, how many students were in teh class?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! in a certain college class, each student received a grade of a,b,c,d or incomplete. in this class, 1/6 of the students received a's, 1/4 received b's, 1/3 received c's, and 1/6 received d's. if three students received grades of incomplete, how many students were in the class?
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Find the fraction of students who received an incomplete.
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Fraction of incompletes = [1 - (1/6 +1/4 + 1/3 + 1/6)]
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= 1 - (2+3+4+2)/12
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= 1 - 11/12
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= 1/12
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Equation:
Let "x" be the number of students in the class.
(1/12)x = 3
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x = 36 (# of students in the class)
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Cheers,
Stan H.
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