A*0.87=B B*1.25=C D*0.45=C,将ABCD从大到小排列

问题描述:

A*0.87=B B*1.25=C D*0.45=C,将ABCD从大到小排列

B=0.87A 得B<A
C=1.25B 得C>B
C=0.45D 得C<D
C=1.25B =1.25*0.87A=1.085A 得 C>A
故 D>C>A>B