______比20多20%,比30少30%的数是______.

2025-06-28 10:37:58
推荐回答(1个)
回答1:

(1)20×(1+20%),
=20×120%,
=24;
(2)30×(1-30%),
=30×70%,
=21;
故答案为:24,21.