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The annual rent collected by a corporation from a certain building was x percent more in 1998 than in 1997 and y percent less in 1999 than in 1998. Was the annual rent collected by the corporation from the building more in 1999 than in 1997? 1. x>y 2. (xy)/100<(x-y) Let us say that the rent that wa...
- by ravihanda
Mon Feb 23, 2015 8:36 pm- Forum: Data Sufficiency
- Topic: how would you solve this one? OG DS #127
- Replies: 2
- Views: 1418
In a certain apartment building, there are one-bedroom and two-bedroom apartments. The rental prices of the apartment depend on a number of factors, but on average, two-bedroom apartments have higher rental prices than do one-bedroom apartments. Let R be the average rental price for all apartments ...
- by ravihanda
Mon Feb 23, 2015 6:54 pm- Forum: Problem Solving
- Topic: In a certain apartment building, there are one-bedroom and t
- Replies: 8
- Views: 4758
If you can only use one flag, you can give 6 signals. If you can use two flags, you can give 6*5 = 30 signals If you can use three flags, you can give 6*5*4 = 120 signals If you can use four flags, you can give 6*5*4*3 = 360 signals If you can use five flags, you can give 6*5*4*3*2 = 720 signals If ...
- by ravihanda
Mon Feb 23, 2015 8:44 am- Forum: Problem Solving
- Topic: Permutation-Combination
- Replies: 6
- Views: 3758