再求助一道题~~

For each of her sales, a saleswoman receives a commission equal to 20 percent of the first $500 of the total amount of the sale, plus 30 percent of the total amount of the sale in excess of $500.  If the total amount of one of her sales was $800, the saleswoman's commission was approximately what percent of the total amount of the sale?

(A) 22%

(B) 24%

(C) 25%

(D) 27%

(E) 28%

answer is C

sorry~~the answer is wrong~~i take it

500*20%=100  300*30%=90

190/800=23.75%

不知道哪里有问题啊……

哈哈，问错了。。我对错答案了。。哈哈。。不好意思啊