Answer:
1.8 mph
Step-by-step explanation:
Speed of the steamer in still water is 18 mph.
Speed of the current = x mph.
1. The steamer going downstream traveled the distance between two ports in 3 hours. Traveling downstream the current "helps" the steamer, then the speed is 18 + x mph.
The distance traveled downstream = 3(18 + x) miles.
2. The steamer going upstream traveled the distance between two ports in 3 hours 40 minutes that is
hours. Traveling upstream the current "interferes" the steamer, then the speed is 18 - x mph.
The distance traveled upstream
miles.
3. The distances are the same, so

Solve this equation:

Answer:
<h2>-35 + 13i</h2>
Step-by-step explanation:

It increases linearly, since it increases by about the same amount every month.
Answer:
49 adults; 2*49 = 98 children and (207-3*49) = 60 students.
Step-by-step explanation:
hope this helps!! :))