In the given question, there are several information's of immense importance. using these information's the correct and the required answer can be determined. It is given that an unknown number has to be found from the information's provided. Let us assume the unknown number = x Then 3x + 3 = 2x -1 3x - 2x = -1 -3 x = -4 So the unknown number is -4. It should be remembered that these are trick questions and it is important to go through each lines very carefully to understand the inner meaning.
So one coat uses 125 chinchillas . So, 10 * 125 will give you how many will give you 1250 chinchillas.. this is the number of chinchillas needed for 10 coats. So for 2 years you would have to multiply it by two so, 1250 * 2 = 2500.