There is a hippo and a kangaroo in the zoo. The hippo eats $$45$$ kilograms more food than the kangaroo. $$20$$ days later, the hippo has consumed $$10$$ times as much food as the kangaroo in total. How many kilograms of food has the hippo consumed in these 20 days? 
Overseas Competition->Knowledge Point->Word Problem Modules->Questions Involving Sum, Difference and Multiples->Problems of Difference and Multiple