In one day, Ella's dog eats 4 pounds of food for every one pound of food that Ella eats. How much food do Ella and her dog in 10 days if Ella eat 20 pounds of food each day?
If Ella's dog eats 4 pounds of food for every one pound of food that Ella eats, when Ella eats 20 pounds of food in a day, Ella's dog eats 4*20 = <<4*20=80>>80 pounds of food.
Together, in one day, Ella and her dog eats 80+20 = <<80+20=100>>100 pounds
In 10 days, Ella and her dog will eat 10*100 = <<10*100=1000>>1000 pounds of food.
#### 1000