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30 Jun 2004, 20:00
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Could someone explain the answer to me ? I couldn't get it 
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Look at the solution this way...
Let there be total of 100 students
Therefore no. of students who are members of commitee and also want to reduce costs = 40
Students who want reduced costs but not members of committee are 20% of total students who want reduced costs(TC).
Therefore students who want reduced costs and are member of commitee are 80% of total students who want reduced costs, which is 40 as mentioned above.
Hence .8 of TC = 40 => TC = 50.
Hope this helps
Let there be total of 100 students
Therefore no. of students who are members of commitee and also want to reduce costs = 40
Students who want reduced costs but not members of committee are 20% of total students who want reduced costs(TC).
Therefore students who want reduced costs and are member of commitee are 80% of total students who want reduced costs, which is 40 as mentioned above.
Hence .8 of TC = 40 => TC = 50.
Hope this helps
01 Jul 2004, 04:04
Kudos
Bookmarks
oops!! forgot to log in last time... 
Look at the solution this way...
Let there be total of 100 students
Therefore no. of students who are members of commitee and also want to reduce costs = 40
Students who want reduced costs but not members of committee are 20% of total students who want reduced costs(TC).
Therefore students who want reduced costs and are member of commitee are 80% of total students who want reduced costs, which is 40 as mentioned above.
Hence .8 of TC = 40 => TC = 50.
Hope this helps
Look at the solution this way...
Let there be total of 100 students
Therefore no. of students who are members of commitee and also want to reduce costs = 40
Students who want reduced costs but not members of committee are 20% of total students who want reduced costs(TC).
Therefore students who want reduced costs and are member of commitee are 80% of total students who want reduced costs, which is 40 as mentioned above.
Hence .8 of TC = 40 => TC = 50.
Hope this helps
