Two children named Peter and Wanda are playing a number game. If Peter’s number z is 200 percent of Wanda’s number, what is 20 percent of Wanda’s number, in terms of z?
A.10z
B.2z
C.z5
D.z10
E.z20
我的答案：
Two children named Peter and Wanda are playing a number game. If Peter’s number z is 200 percent of Wanda’s number, what is 20 percent of Wanda’s number, in terms of z?
