SOLUTION: The cost of stainless steel tubing varies jointly as the length and the diameter of the tubing. If a 5 foot length with a diameter 2 inches costs $48.00, how much will a 8 foot le

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Question 83238: The cost of stainless steel tubing varies jointly as the length and the diameter of the tubing. If a 5 foot length with a diameter 2 inches costs $48.00, how much will a 8 foot length with a diameter of 4 inches cost?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
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The cost of stainless steel tubing varies jointly as the length and the diameter of the tubing. If a 5 foot length with a diameter 2 inches costs $48.00, how much will a 8 foot length with a diameter of 4 inches cost?
:
L*D*k = Cost
5*2*k = 48
10k = 48
k = 4.8
:
For 8' of 4" tubing:
Cost = 8*4*4.8
Cost = $153.60
:
First inclination was to change the length to inches also, but you get the same
answer whether you do or don't
Using all inches k = .4
Cost = 96*4*.4 = $153.60
:
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