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Plugging In

I am having a problem understanding the following: A group of 10 people decide to share equally in an apartment that costs r dollars to rent each month. If x people drop out of the group, how much more, in dollars, must each remaining person pay? I used r= 100 and x= 5 below is the explanation I got...

by BKNY718

Thu Sep 01, 2011 5:42 pm
Forum: GMAT Math
Topic: Plugging In
Replies: 5
Views: 5619

Thanks so much!

winniethepooh wrote:Yep.
But before applying practice them, so that you can be faster in solving during the test!

by BKNY718

Sat Aug 27, 2011 3:27 pm
Forum: Data Sufficiency
Topic: Combining Inequalities
Replies: 7
Views: 1196

Hello, can someone explain the following: If -2<a<11 and 3<b<12, then which of the following is NOT true? 1<a+b<23 -14<a-b<8 -7<b-a<14 1<b+a<23 -24<ab<132 Thanks The answer is C. For Addition of a and b. Take maximum value for maximum range = 11 + 12 = less than 23 And minimum vakue = -1 + 3 = grea...

by BKNY718

Thu Aug 25, 2011 3:12 pm
Forum: Data Sufficiency
Topic: Combining Inequalities
Replies: 7
Views: 1196

Combining Inequalities

Hello, can someone explain the following:

If -2<a<11 and 3<b<12, then which of the following is NOT true?

1<a+b<23
-14<a-b<8
-7<b-a<14
1<b+a<23
-24<ab<132

Thanks

by BKNY718

Wed Aug 24, 2011 7:02 pm
Forum: Data Sufficiency
Topic: Combining Inequalities
Replies: 7
Views: 1196