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November 13th, 2009, 11:50 PM
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| |  Percentage problem
This year, 75% of the graduating class of Harriet Tubman High School had taken at least 8 math courses. Of the remaining class members, 60% had taken 6 or 7 math courses. What percent of the graduating class had taken fewer than 6 math courses?
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November 14th, 2009, 12:37 AM
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Hello jesselovesmath Quote:
Originally Posted by jesselovesmath  This year, 75% of the graduating class of Harriet Tubman High School had taken at least 8 math courses. Of the remaining class members, 60% had taken 6 or 7 math courses. What percent of the graduating class had taken fewer than 6 math courses?
| 75% away from 100% leaves 25% who had taken less than 8 math courses. And 60% of these had taken 6 or 7 courses. So 40% of them had taken fewer than 6.
That's 40% of 25% = 10% of the whole class.
(If you're not sure why, work out  .)
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November 14th, 2009, 02:41 AM
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| |  Thanks!
Thanks for answering the question, Grandad.  | | Thread Tools | | | | Display Modes |  Linear Mode | 
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