Question

1.牛的头数比羊的只数多25%,羊的只数比牛的头数少白分之几?2.甲的岁数和乙的岁数比是4:5,甲的岁数是乙的百分之几?

Answer 1

1.1+25%=125% 25%/125%=20%

2.4/5=80%

3.120%-1=20% 30/20%=150 150/30%=500