Answer:
the first piece of rope would be 4 feet
Step-by-step explanation:
4 + 8 + 9 = 21

Solution:
Given PRQ is a triangle.
ST is a line parallel to RQ.



<u>Triangle proportionality theorem,</u>
<em>If a line parallel to one side of a triangle intersects the other two sides, then it divides the two sides proportionally.</em>


Do cross multiplication, we get

Divide by 2x on both sides, we get

You have the formula already, just plug in 30 for s (speed) and solve for d (distance).