a master electrician earns $62 per hour his apperntice earns $40 per hour
Assuming both the master electrician and the apprentice work the same number of hours:
If the master electrician works 40 hours per week, he would earn $62 x 40 = $2480 per week.
If the apprentice works 40 hours per week, he would earn $40 x 40 = $1600 per week.
Therefore, the master electrician earns $2480 - $1600 = $880 more per week than his apprentice.