It probably charges $12 for 50 minutes of work at this rate what would the plumber charge for one hour of work

Answer 1

We can first determine how much he charges for 1 minute by:

$12 / 50 = $0.24 per minute

Then, since 60 minutes is equivalent to 1 hour, we can multiply his minute rate by 60 to determine his hourly rate:

60 * $ 0.24 = $14.40 per hour