发布网友 发布时间:2022-04-24 11:16
共1个回答
热心网友 时间:2023-10-10 23:32
(1)甲种电话费:0.3+(5-3)×0.1,
=0.3+2×0.1,
=0.3+0.2,
=0.5(元);
乙种电话费:
0.2+(5-3)×0.1,
=0.2+2×0.1,
=0.2+0.2,
=0.4(元);
(2)3+(0.7-0.2)÷0.1,
=3+0.5÷0.1,
=3+5,
=8(分钟);
答:(1)打市内电话5分钟,甲种电话需0.5元,乙种电话需0.4元;
(2)小王打了一次市内电话花了0.7元,这次电话最长可以打8分钟.
故答案为:0.5,0.4,8.