Задачи на смеси с системой уравнений. Определяем состав исходной смеси (в %).
2 weeks ago 00:53:15 1
2 weeks ago 00:00:00 1
2 weeks ago 00:03:12 1
2 weeks ago 00:25:47 1
2 weeks ago 00:23:02 1
2 weeks ago 00:38:06 1
2 weeks ago 00:06:59 1
2 weeks ago 00:03:46 1
2 weeks ago 00:01:57 1
2 weeks ago 00:01:00 1
2 weeks ago 00:27:46 1
2 weeks ago 00:04:18 1
2 weeks ago 00:35:58 1
2 weeks ago 00:05:36 1
2 weeks ago 01:08:46 1
2 weeks ago 00:30:23 1
2 weeks ago 00:21:51 1
2 weeks ago 00:06:16 1
2 weeks ago 00:30:05 2
2 weeks ago 00:13:30 1
2 weeks ago 00:05:30 1
2 weeks ago 00:13:04 1
2 weeks ago 00:21:16 1
2 weeks ago 00:11:29 1
