Aplumber and his assistant work together to replace the pipes in an old house. the plumber charges $40 an hour for his own labor and $15 an hour for his assistant's labor. the plumber works twice as long as his assistant on this job, and the labor charge on the final bill is $3325. how long did the plumber and his assistant work on this job

The plumber worked 70 hours and his assistant 35 hours.

Explanation:

To solve this problem, we will use the substitution method. Step by step explanation:

1. Defining the variables:

2. Defining the equations:

3. Replacing P in equation 2:

4. Replacing A in equation 1 to find the value of P:

This means the plumber worked 70 hours and his assistant 35 hours for a final bill of $3325.

b. a single paragraph.

a paragraph is a series of sentences that are organized and make sense, and are all related to a single topic . almost every piece of writing you do that is longer than a few sentences should be organized into paragraphs. this is because paragraphs show a reader where the subdivisions of an essay begin and end, and thus the reader see the organization of the essay into subjects in order to be able to understand its main points.

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