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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 meters thick?
(1) The cost of a square slab that is 2 meters long and 0.2 meters thick is $160 more than the cost of a square slab that is 2 meters long and 0.1 meters thick.
(2) The cost of a square slab that is 3 meters long and 0.1 meters thick is $200 more than the cost of a square slab that is 2 meters long and 0.1 meters thick.
Answer: D
Source: GMAT Prep
(1) The cost of a square slab that is 2 meters long and 0.2 meters thick is $160 more than the cost of a square slab that is 2 meters long and 0.1 meters thick.
(2) The cost of a square slab that is 3 meters long and 0.1 meters thick is $200 more than the cost of a square slab that is 2 meters long and 0.1 meters thick.
Answer: D
Source: GMAT Prep
