Problema Solution
A plumber earns $15 per hour more than her apprentice. For a 40-hour week, their combined earnings are $2200. What is the hourly rate for each person?
Answer provided by our tutors
Let
x dollars per hour is the hourly rate of the apprentice, x>0
x + 15 dollars per hour is the hourly rate of the plumber
For a 40-hour week, their combined earnings are $2200:
40(x + x + 15) = 2200
........
........
x = $20 per hour
20 + 15 = $35 per hour
The hourly rate of the plumber is $35 per hour.
The hourly rate of the apprentice is $20 per hour.