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November 28th, 2010, 02:42 AM   #1
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Word problem

After the examination session was clear that group of very good grades of students passed the session is less than 4/33 the number of students in the group, but higher than 5/42 the total number of group. What is the minimum number of students could be in group?
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November 28th, 2010, 12:36 PM   #2
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Re: Word problem

Hello, MIDI!

Quote:

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December 4th, 2010, 02:36 PM   #3
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Re: Word problem

i hate lcm
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December 16th, 2010, 08:06 AM   #4
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Re: Word problem

But answer in book is 25.
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December 16th, 2010, 06:28 PM   #5
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Re: Word problem

Like soroban did, use the inequality:



write in approximate decimal form:



Now, we need a decimal in between the two decimals with the smallest denominator...

Let

thus, 25 is the smallest group that could have the required fractional portion satisfying the given conditions.
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December 19th, 2010, 08:02 AM   #6
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Re: Word problem

Quote:
Originally Posted by MarkFL

Now, we need a decimal in between the two decimals with the smallest denominator...

Let

thus, 25 is the smallest group that could have the required fractional portion satisfying the given conditions.
how u get from 12N=3/25 ?
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December 19th, 2010, 08:20 AM   #7
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Re: Word problem

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