Answer:
[tex]h=740\ in[/tex]
Explanation:
Given:
length of each pipe section, [tex]l=15\ ft=180\ in[/tex]
length of each coupling, [tex]c=4 \ in[/tex]
Now according to question we have six hoses which will require 5 couplings to join them.
So the total length of the hose:
[tex]h=6\times l+5\times c[/tex]
[tex]h=6\times 180+5\times 4[/tex]
[tex]h=740\ in[/tex] is the total length of the hose.