Question

the table below shows the details of three different river rafting adventures.

which river rafting adventure offers the lowest average speed in kilometers per hour?

choose 1 answer:

a high tide
b monsoon
c tsunami

Explanation:

Define average speed formula

Using the Unit Rates knowledge point

$$ \text{Average Speed} = \frac{\text{Distance}}{\text{Duration}} $$

Calculate speed for High Tide

Using the Unit Rates knowledge point

$$ \text{Speed}_{\text{High Tide}} = \frac{3\text{ km}}{1\text{ hour}} = 3\text{ km/h} $$

Calculate speed for Monsoon

Using the Unit Rates knowledge point

$$ \text{Speed}_{\text{Monsoon}} = \frac{5\text{ km}}{2\text{ hours}} = 2.5\text{ km/h} $$

Calculate speed for Tsunami

Using the Unit Rates knowledge point

$$ \text{Speed}_{\text{Tsunami}} = \frac{14\text{ km}}{4\text{ hours}} = 3.5\text{ km/h} $$

Compare the average speeds

Using the Unit Rates knowledge point

$$ 2.5\text{ km/h} < 3\text{ km/h} < 3.5\text{ km/h} $$

Answer:

• (A) High Tide
• (B) Monsoon (Correct answer)
• (C) Tsunami