Answer:
Klorina's rate in still water is 4.5 km/h
Current's rate is 0.5 km/h
Step-by-step explanation:
Let
x km/h = Klorina's rate in still water
y km/h = current's rate
<u>With the current (current helps):</u>
Distance = 10 km
Time = 2 hours
Rate = x + y km/h

<u>Against the current:</u>
Distance = 8 km
Time = 2 hours
Rate = x - y km/h

Divide both equations by 2:

Add these equations:

Subtract these two equations:

Answer:
x = 4
Step-by-step explanation:
solate the variable by dividing each side by factors that don't contain the variable.
Answer:
449.65
Step-by-step explanation:
391x.15=58.65
$58.65+$391= 449.65
It'll be 639.500 or just 639.5