PREP-PS1 115

小鬼和灵 · 发表于 2010-10-21 17:40:18

115.11608-!-item-!-187;#058&007787

A used-car dealer sold one car at a profit of 25 percent of the dealer's purchase price for that car and sold another car at a loss of 20 percent of the dealer's purchase price for that car.If the dealer sold each car for $20,000, what was the dealer's total profit or loss, in dollars, for the two transactions combined?

(A) $1,000 profit

(B) $2,000 profit

(C) $1,000 loss

(D) $2,000 loss

(E) $3,334 loss

我选的A…答案是C

danoulini · 发表于 2010-10-21 18:07:50

S = (1+0.25)*P1
S = (1-0.2)*P2
S = 20000

=> S - P1 = 0.2*S
=> S - P2 = -0.25*S

=> loss = 0.05*S= 1000

小鬼和灵 · 发表于 2010-10-21 22:59:10

啊谢谢我把price20000 当成是二次售价了

PREP-PS1 115

所属分类: GMAT考试

正在浏览此版块的会员 ()

浏览过的版块