Question

Aplumber is fixing a pipe with a an interior diameter of 0.63 inches. He buys a replacement piece that must fit inside the old pipe. He uses plumbing tape that will fill 0.15 inches of the space between the two pieces of pipe. The new pipe much be 0.1 inches smaller than the old pipe and tape, so that it can fit inside.

What is the largest interior diameter pipe he can buy that will still fit inside the old pipe?
Answer____inch
Explain how you found your answer.

Answer 1

0.68 inches

Explanation:

The interior diameter of the old pipe is 0.63 inches, and the plumbing tape will fill 0.15 inches of the space between the old pipe and the new pipe. Therefore, the total diameter that the new pipe must fit inside is:

0.63 inches + 0.15 inches = 0.78 inches

The new pipe must be 0.1 inches smaller than this diameter to ensure a proper fit. Therefore, the diameter of the new pipe should be:

0.78 inches - 0.1 inches = 0.68 inches

So, the new pipe must have an interior diameter of 0.68 inches to fit correctly inside the old pipe with the plumbing tape.