Question 162821
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Well, i think there was a misrepresentation you did on the pipes. Let's see oks,
{{{1stPipe=2x-1}}}, 1 foot shorter than twice the 2nd
{{{2nd Pipe=x}}}, unknown
{{{3rdPipe=4(2x-1+x)}}}, 4 times 1st & 2nd Pipe combined
{{{TotalFeet=325}}}
Putting into eqn,
{{{2x-1+4(2x-1+x)=325}}}
{{{2x-1+8x-4+4x=325}}}, combine similar terms
{{{15x=325+1+4=330}}}
{{{cross(15)x/cross(15)-cross(330)22/cross(15)}}}, divide 15 to isolate "x"
{{{x=22feet}}} ----------------------------------> 2nd Pipe
{{{2(22)-1=44-1=43feet}}} -----------------------> 1st Pipe
{{{4(22+43)=4(65)=260feet}}} --------------------> 3rd Pipe
Check,
{{{325=22+43+260}}}
{{{325ft=325ft}}}
thank you,
Jojo</pre>