Before a salary increase, the weekly salary of a worker for 42 hours in a week was as much as the ...

Before a salary increase, the weekly salary of a worker for 42 hours in a week was as much as the worker is paid now for 35 hours of work in a week. What is the percent increase in the worker's salary per hour?

Quiz

Answer/Solution

20

Steps/Work

Let x be the original salary per hour.
Let y be the salary per hour after the increase.
35y=42x
y=(42/35)x=1.2x
The salary increased 20%.
The answer is A.