Sam has 9 models. Bill has twice as many models as Jim. Jim has three less models than Sam. Show how to find the difference between the number of models Bill has and the number of models Sam has.
Sam = 9 (This is given in the first sentence.)
Jim = 9-3 = 6
Bill = 2(6) = 12
To find the difference between the number of models Bill has and the number of models Sam has, we need to determine the number of models each person has.
First, we are given that Jim has three less models than Sam. Since Sam has 9 models, Jim must have 9 - 3 = 6 models.
Next, we are told that Bill has twice as many models as Jim. Since Jim has 6 models, Bill must have 2 * 6 = 12 models.
Finally, to find the difference between the number of models Bill has and the number of models Sam has, we subtract the number of models Sam has from the number of models Bill has: 12 - 9 = 3.
Therefore, the difference between the number of models Bill has and the number of models Sam has is 3.