1) 1/5 - 1/6 = 6/30 - 5/30 = 1/30 за второй час
2) 1/5 + 1/30 = 6/30 + 1/30 = 7/30 за два часа
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Verified answer
1) 1/5 - 1/6 = 6/30 - 5/30 = 1/30 за второй час
2) 1/5 + 1/30 = 6/30 + 1/30 = 7/30 за два часа