RyannLambertt7141
02.12.2020 •
Mathematics
If a tourist will increase his speed by 1 km/h then in 4 hours he travels a distance greater than 20 km. If he reduce his speed by 1 km/h, in 5 hours he travels a distance of less than 20 km. What is the speed of the tourist ?
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Ответ:
4,5,6,7
Step-by-step explanation:
-1 < x ≤7 , x > 3 means that 3 < x ≤ 7