Question

某商品降价10%后,如果要恢复原价,则应提价(    )

A.10%                            B.9%

C.11%                            D.%

Answer 1

D

解析：设原价为a,则降价10%后,价格为a(1-10%)=0.9a.

设应提价为原来的x%才能恢复原价,

则0.9a(1+x%)=a.

∴1+x%=.

x%=%.

∴应提价%.