Question 179968
The cost of pipe at Home Depot varies jointly as the length and diameter of the pipe. If 20 feet of 0.5 inch diameter pipe costs $36.60, then what is the cost of 12 feet of 0.75 inch diameter pipe?
:
How about:
{{{(20*.5)/(12*.75)}}} = {{{36.60/x}}} which is: {{{(10)/(8)}}} = {{{36.60/x}}}
Cross multiply
10x = 8(36.60)
:
10x = 292.8
x = {{{292.8/10}}}
x = $29.28 for 12' of .75" pipe