human
Rollo has 3 guinea pigs, the first guinea pig eats 2 cups of food, the second guinea pig eats twice as much as the first one, and the third guinea pig eats 3 cups more than the second one. How many cups of food does Rollo need to feed all his Guinea pigs?
assistant
How many cups of food does the second guinea pig eat? ** The second guinea pig eats 2 x 2 = <<2*2=4>>4 cups of food.
How many cups of food does the third guinea pig eat? ** The third guinea pig eats 4 + 3 = <<4+3=7>>7 cups of food.
How many cups of food does Rollo need to feed all his Guinea pigs? ** Therefore, Rollo needs a total of 2 + 4 + 7 = <<2+4+7=13>>13 cups of food for the guinea pig.
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