multi step equation

Question

Robert earns $512.75 less than the salary earned by Noel. John earns three times Robert’s salary. If the total salary earned by them is $47,645.25, how much salary do Robert earn?

Answer 1

N = Noel's Salary

N - 512.75 = Robert's Salary (512.75 less than Noel)

3(N-512.75) = John's Salary (3 times Robert's Salary)

Total Salary = 47645.25 = N + (N - 512.75) + 3(N-512.75)

47645.25 = 2N - 512.75 + 3N - 1538.25

47645.25 = 5N - 2051

49696.25 = 5N

9939.25 = N (Noel's Salary)

Robert's Salary = 9939.25 - 512.75 = 9425.50