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求解数学一题
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 $1953
答案选A，我选D
(1)能推出cost没有问题。对于(2), 我的思路是let cost be X then the equation would be X+40%X=1953 X=1395
What's wrong with (2)?
求解，非常感谢！ |
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