( )比45多20% 16比( )少60%

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()比45多20%16比()少60%()比45多20%16比()少60%()比45多20%16比()少60%(54)比45多20%16比(40)少60%(54)比45多20%16比(40)少60%45

( )比45多20% 16比( )少60%
( )比45多20% 16比( )少60%

( )比45多20% 16比( )少60%
(54 )比45多20% 16比( 40)少60%

(54 )比45多20% 16比(40)少60%
45*(1+20%)=54
16÷(1-60%)=40