30千克比50千克少( )%?( )米比20米多30%?

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30千克比50千克少( )%?( )米比20米多30%?
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30千克比50千克少( )%?( )米比20米多30%?
30千克比50千克少( )%?( )米比20米多30%?

30千克比50千克少( )%?( )米比20米多30%?
30千克比50千克少(40 )%
(50-30)÷50
=20÷50
=40%
(26 )米比20米多30%
20×(1+30%)
=20×1.3
=26米

40%,26.

(50-30)/50=40%

(50-30)/50=40%
(x-20)/x=30% x=200/7

30千克比50千克少(40 )%
(50-30)÷50
=20÷50
=40%
(26 )米比20米多30%
20×(1+30%)
=20×1.3
=26米