Source: Geoff Williams - US News

According to the U.S. Department of Agriculture, the cost of feeding a family of four a healthy diet runs between $146 to $289 a week. But even if you decide to spend, say, $800 a month on groceries, that number will likely become obsolete before you know it: Appetites evolve as we age, food prices fluctuate and, of course, given that families don't always eat the same meals over and over, it's simply a challenge to make the math work out during each shopping trip.

Read Full Article: 5 secrets of frugal grocery shoppers