甲数的25% 等于乙数的75%,那么甲数与乙数的比是 : .
24÷ = :16=0.375== %.
:24=== ÷16= %
= :35=5:7= ÷21=.
== ÷20=6: = %= 折.
÷15=0.8== %= 折.