Solve.
-The cost of stainless steel tubing varies jointly as the length and the diameter of the tubing. If a 5 foot length with diameter 2 inches costs $48.00 , how much will a 9 foot length with diameter 4 inches cost?

Question

Quizplus · Accepted Answer

The cost of the tubing is directly proportional to both the length and the diameter. So, if the length and diameter both double, the cost would quadruple. Since the new length is 9/5 times the original length and the new diameter is 4/2 times the original diameter, the new cost is $48.00 * (9/5) * (4/2) = $172.80.

Solve. -The Cost of Stainless Steel Tubing Varies Jointly as the the Length