鞋店的王老板新进一款板鞋,一双鞋子若卖140元,可赚40%,若卖120元可赚( ) A.20% B.22% C.25%
问题描述:
鞋店的王老板新进一款板鞋,一双鞋子若卖140元,可赚40%,若卖120元可赚( )
A. 20%
B. 22%
C. 25%
答
140÷(1+40%)
=140÷140%
=100(元)
(120-100)÷100
=20÷100
=20%
答:若卖120元可赚20%.
故选:A.