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1. The cost of a square slab is proportional to its thickness and also proportional to the square of its length. What is the cost of a square slab that is 3 meters long and 0.1 meter thick ? (1) The cost of a square slab that is 2 meter long ans 0.2 meter thick is $160 more than the cost of a squar...
- by hassasin
Mon Oct 18, 2010 2:29 am- Forum: Data Sufficiency
- Topic: can somebody explain these problems
- Replies: 10
- Views: 1467
i am sorry the options should be equal to zeroshovan85 wrote:Please check the options. Something is missing it seemshassasin wrote: 2. In the x-y plane, does the line with the equation y=3x+2 contain the point (r,s) ?
(1) (3r+2-s)(4r+9-s)=0
(2) (4r-6-s)(3r+2-s)=0
- by hassasin
Sun Oct 17, 2010 8:57 pm- Forum: Data Sufficiency
- Topic: can somebody explain these problems
- Replies: 10
- Views: 1467
can somebody explain these problems
1. The cost of a square slab is proportional to its thickness and also proportional to the square of its length. What is the cost of a square slab that is 3 meters long and 0.1 meter thick ? (1) The cost of a square slab that is 2 meter long ans 0.2 meter thick is $160 more than the cost of a square...
- by hassasin
Sun Oct 17, 2010 10:30 am- Forum: Data Sufficiency
- Topic: can somebody explain these problems
- Replies: 10
- Views: 1467