甲数是30,乙数是甲数的2/3,乙数是_;丙数也是30,相当于丁数的2/3,丁数是_.

问题描述:

甲数是30,乙数是甲数的

2
3
,乙数是______;丙数也是30,相当于丁数的
2
3
,丁数是______.

(1)30×

2
3
=20;
答:乙数是20.
(2)30÷
2
3

=30×
3
2

=45;
答:丁数是45.
故答案为:20,45.