What was the average monthly income for this worker and her family?
What were the average monthly expenses for this
family?
This family's expenses
their
income.
Without income from bag stringing, they likely would
have
to pay their expenses.

What is the main difference between primary and secondary sources? a. primary sources are historical documents, and secondary sources are modern-day documents. b. primary sources are derived from museums and archives, and secondary sources are created by history students and academics. c. primary sources are found in ancient places with a rich history, and secondary sources are found in historical journals and blogs. d. primary sources are created during a particular historical era, and secondary sources are created by studying primary sources.