PP-T2-PS164

[emmaaqua]

Lisa bought a house for $70,000 and paid closing costs equal to 2 percent of the purchase price. Later Lisa sold the house for $82,000 and paid a broker's commission equal to 10 percent of the selling price. What was Lisa's profit from the two transactions?

(A) $2,160
(B) $2,400
(C) $3,600
(D) $3,800
(E) $12,000

答案是B..

這題我很疑惑...我的算法是
買房子:70000+(70000*2%)=71,400
賣房子:82000+(82000*10%)=90,200
所以利潤不就是=90200-71400=18,800

可是為甚麼答案是2400呢??
請問一下~是不是我那邊的計算思考錯誤......

謝謝~!!

[amazingslim]

paid a broker's commission equal to 10 percent of the selling price=8,200,是賣屋成本,不是收入

82,000-71,400-8,200=2,400

[emmaaqua]

果真是想錯方向了~
謝謝你喔~^^

[chris8888]

yeah...
一不小心就給他搞錯方向了
82000 * (1 - 10/100) - 70000 * (1 + 0.02) = $2400

82000 * (1 - 10/100) 這百分之10是成本不是收益, 所以不要搞錯喔!!! 我自己也搞錯, == '''