A boat takes twice as long to travel 5km upstream as it does travel 3 km downstream in a river that flows at a rate of 2km/hr. A what speed does the boat travel in still water? Hints: • Upstream means that the boat going against the flow of the river. • Downstream means that the boat going on the same direction as flow of the river. • Still water means that the water is not flowing. • Consider the two entities: boat upstream and boat downstream.
Equations and Inequations
Equations and inequalities describe the relationship between two mathematical expressions.
Linear Functions
A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.
A boat takes twice as long to travel 5km upstream as it does travel 3 km
downstream in a river that flows at a rate of 2km/hr. A what speed
does the boat travel in still water?
Hints:
• Upstream means that the boat going against the flow of the river.
• Downstream means that the boat going on the same direction as flow of
the river.
• Still water means that the water is not flowing.
• Consider the two entities: boat upstream and boat downstream.
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