To determine a pieceworker's regular hourly rate for one week:

a$.$ divide the total weekly earnings from piece rates by the number of pieces produced.

b$.$ add the total weekly earnings from piece rates and all other sources and divide by the total number of pieces produced.

c$.$ divide the total weekly earnings from piece rates, less earnings from other sources, by the hours worked in a week.

d$.$ divide the total weekly earnings from piece rates and all other sources by the hours worked in the week.

e$.$ Do none of these choices are correct.