SOLUTION: this year, 75% of the graduating class of harriet tubman high school had taken at least 8 math courses. Of the remainig class member, 60% had taken 6 or 7 math courses. What percen

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Question 113958: this year, 75% of the graduating class of harriet tubman high school had taken at least 8 math courses. Of the remainig class member, 60% had taken 6 or 7 math courses. What percent of the graduating class had taken fewer than 6 math courses?
Answer by stanbon(48535) About Me  (Show Source):
You can put this solution on YOUR website!
Let "x" be the number in the graduating class:
this year, 75% of the graduating class of harriet tubman high school had taken at least 8 math courses.
0.75x had at least 8 math courses
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Of the remainig class member, 60% had taken 6 or 7 math courses.
0.60*0.25x = 15% had 6 or 7 math courses
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What percent of the graduating class had taken fewer than 6 math courses?
x - 0.75x - 0.15x = 0.10x
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10% had taken few than 6 math courses
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Cheers,
Stan H.