甲、乙两数的比是3:5,如果甲数是24,乙数是 ;如果甲、乙两数和是24,乙数是 .
= :16=12: = ÷ = 填小数.
=15÷ = :50=.
1.5: =0.75=75÷ = :36=.
:12=5÷4== %= (填小数).
3÷4=9: == 填分数= (填小写)