V = 3½ км/ч
S = 20 км
t = S ÷ V = 20 ÷ 3½ = 20×2/7 = 40/7 = 5 5/7 ч
Copyright © 2025 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
V = 3½ км/ч
S = 20 км
t = S ÷ V = 20 ÷ 3½ = 20×2/7 = 40/7 = 5 5/7 ч