25. The surface area of a square tabletop was changed so that one of the dimensions was reduced by 1 inch and the other dimension was increased by 2 inches. What was the surface area before these changes were made? (1) After the changes were made, the surface area was 70 square inches. (2) There was a 25 percent increase in one of the dimensions.
这道完全是没有看懂。那个dimension到底指的是哪一边啊？
22. A jewelry dealer initially offered a bracelet for sale at an asking price that would give a profit to the dealer of 40 percent of the original cost. What was the original cost of the bracelet? (1) After reducing this asking price by 10 percent, the jewelry dealer sold the bracelet at a profit of $403. (2) The jewelry dealer sold the bracelet for $1,953.
In any case, the second statement is quite ambiguous, and many people would quite naturally think that $1953 is the price of the bracelet with the 40% markup. I suppose the information in Statement 1 does suggest that the price could change, however, which does help to clarify the situation.
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发表于 2011-4-30 05:36:59
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