30% to 40% http://www.usda.gov/oce/foodwaste/sources.htm approximately 30 to 40 percent of all food 30 kwa asilimia 40 rate of 40 percent 30 y 40 porciento 30 प्रतिशत 40 30 y 40 porciento USDA said US Department of Agriculture 30 te 40 persent 30% to 40% Currently Economic Research Service study by USDA 30 प्रतिशत 40 30 and 40 percent 30 and 40 percent 30 प्रतिशत 40 30 and 40 percent U.S. Department of Agriculture 30 percent of the food supply is wasted approximately 30 to 40 percent of all food 30 y 40 porciento