Martha bought an armchair and a coffee table at an auction and sold both items at her store. Her gross profit from the purchase and sale of the armchair was what percent greater than her gross profit from the purchase and sale of the coffee table?
(1) Martha paid 10 percent more for the armchair than for the coffee table.
(2) Martha sold the armchair for 20 percent more than she sold the coffee table.
Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
EACH statement ALONE is sufficient.
Statements (1) and (2) TOGETHER are NOT sufficient.
审题,没看到gross profit,错误的以为是revenue。
(1)(2)
A a0→a1
C c0→c1
(1)a0=1.1c0
(2)a1=1.2c1
问(a1-a0/a1)➗(c1-c0/c1)
化简得 (1.2c1-1.1c0)/(1.2c1-1.2c0),还是算不出!!
不知道卖了多少个啊啊啊啊
revenue=price*number啊啊啊啊啊啊
怎么能忘了呢............
都是卖了一个,只是不知道售价跟成本的关系
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