Answer:
<em>The ferry can travel
of the distance between the two ports in one hour.</em>
Step-by-step explanation:
A ferry traveled
of the distance between two ports in
hour.
Suppose, the ferry traveled
of the distance between the two ports in one hour.
So, the <u>equation according to the ratio of "distance" to "time"</u> will be.......

Thus, the ferry can travel
of the distance between the two ports in one hour.
A = y(9 + 3x) factor y out of 9y+3yx, then devided both sides by (9+3x)
A/(9+3x) = y
Answer:

Step-by-step explanation:
Given

Opposite points:
and 
Required
Find k
First, calculate the midpoint of the opposite points.

This gives:


Open bracket

The equation
becomes:


Solve for k


Average speed the others are categorical.