30米比______少 1 5 ,50千克比80千克少______%

30米比______少 1 5 ,50千克比80千克少______%.
2025-05-19 10:55:12
推荐回答(1个)
回答1:

(1)30÷(1-
1
5
),
=30 ÷
4
5

=37.5(米);
(2)(80-50)÷80,
=30÷80,
=37.5%;
故答案为:37.5米,37.5.