一件商品先涨价10%,后又打九折销售,现价与原价相等._(判断对错)
问题描述:
一件商品先涨价10%,后又打九折销售,现价与原价相等.______(判断对错)
答
9折=90%,
1×(1+10%)×90%,
=1×1.1×0.9,
=99%.
现价是原价的99%.
故答案为:×.