Household income in different countries varies, and depends on how many people in the family work. In some countries, both, man and woman work, and contribute to the household budget. In other countries, the only working person is the man while the woman raises the children. Explanation: people is plural, so you use "work" not "works", just like "man and woman" Obs.: Maybe you could change man and woman for husband and wife too

Household income in different countries varies, and depends on how many people in the family works. In some countries, both, man and woman work, and contribute to household budget. In other countries, the only working person, is a man, while woman raise the children.