Question

1. a mechanic needs the following lengths of 3/8 - inch copper tubing: one piece - 15 inches, one piece - 8 inches, one piece - 10 inches, one piece - 11 inches, one piece - 16 inches, one piece - 9 inches, two pieces - 12 inches each. how many inches of tubing are needed for the job?

Explanation:

Step1: Calculate the total length of the single - piece tubes

Add up the lengths of the tubes that have only one piece: \(15 + 8+10 + 11+16 + 9\).

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Step2: Calculate the total length of the two - piece tubes

Since there are two pieces of 12 - inch tubes, the total length is \(2\times12=24\) inches.

Step3: Calculate the total length of all tubes

Add the results from Step1 and Step2: \(69+24\).

$$69 + 24=93$$

Answer:

93