human
A cup of dog food weighs 1/4 of a pound. If Mike has 2 dogs that each eat 6 cups of dog food twice a day how many 20 pound bags of dog food does he need to buy a month?
assistant
How many cups of food does each dog eat? ** Each dog eats 6*2=<<6*2=12>>12 cups of food a day
How many cups of food do his two dogs eat? ** His two dogs eat 12*2=<<12*2=24>>24 cups a day
How many pounds of food do his two dogs eat? ** Thus they eat 24/4=<<24/4=6>>6 pounds a day
How many pounds of food do his two dogs eat? ** So they eat 6*30=<<6*30=180>>180 pounds a month
How many bags of food does he need to buy a month? ** So he needs to buy 180/20=<<180/20=9>>9 bags of food
#### 9