Question

question 2 (1 point) dewayne is welding up two 12 - inch pipes to each other. each of his welding rods makes a 2.12 inch bead. the number of welding rods in a 5 lbs. box can be found by taking the denominator of the diameter of the welding rod and multiplying it by 4.15. for example a 5lbs. box of 1/16” welding rods has approximately 16*4.15≈66 rods in a 5 lbs. box. if a 5lb box of 1/16 welding rods is used for the weld, and a 5lb box costs $15.75, how much does each pass around the weld cost just in welding rods? round to the nearest cent. your answer: answer units

Explanation:

Step1: Calculate number of rods per box

We know a 5 - lbs box has approximately $16\times4.15 = 66.4$ rods.

Step2: Find cost per rod

The cost of a 5 - lb box is $15.75$. To find the cost per rod, we divide the cost of the box by the number of rods in the box. Let $C$ be the cost per rod. Then $C=\frac{15.75}{66.4}$.
$C=\frac{15.75}{66.4}\approx0.2372$ dollars per rod.

Step3: Round to the nearest cent

Rounding $0.2372$ to the nearest cent gives $0.24$ dollars or 24 cents.

Answer:

24 cents