Aveteran need to know an animal weight in kilograms if 20 lb is about 9 kilograms and the dog weight 30 lb find how much the dog weigh in kilograms explain your reasoningwhat is the difference between ratio, unit rate and rate

Okay. So,to solve this, we should set up a proportion. 20/9 = 30/x. Do some cross multiplication to get 20x = 270. Now, divide each side by 20 to isolate the x. 270/20 is 13.5. A 30 lb dog weighs about 13.5 kilograms. The unit rate is about 2.22 pounds per 1 kilogram. Ratio is something about comparison, while unit rate is more precise and to the point.