That last line seems... obvious. One person feeding a spouse and three children will have a harder time than one person feeding themselves, given the same low amount of money.
This is a common tactic that left-wingers use to prove that wages are insufficient, and that companies are exploting society because some full time workers are eligible for food stamps.
This fails on 3 fronts: 1. The threshold for food stamp eligibility is sufficiently high that normal wages qualify, eg. 70k. 2. Technically any wage can qualify for food stamps if one's household size is large enough. 3. We also believe in equal pay for equal work.