Dr. Gallo's waiting room has a total of 18 magazines, including 3 fashion magazines. There are 5 more cooking magazines than there are decorating magazines. How many decorating magazines are there? You can use cubes to act out the problem.
Sorry did not mean to post this question again! Steve answered it for me earlier. Thank you Steve for you answer!
10
To solve this problem, let's break it down step by step using cubes to represent the different types of magazines.
1. Start by representing the total number of magazines in Dr. Gallo's waiting room, which is 18. We can use 18 cubes for this.
2. Among the total magazines, we know that there are 3 fashion magazines. Place 3 cubes aside to represent the fashion magazines.
3. Next, let's figure out the number of cooking magazines. The problem states that there are 5 more cooking magazines than decorating magazines. Let's assume there are x decorating magazines. Since there are 5 more cooking magazines, the number of cooking magazines would be x + 5.
4. Add cubes to the model accordingly. If there are x decorating magazines, place x cubes to represent them. Since there are x + 5 cooking magazines, place x + 5 cubes to represent them.
5. Adding up the fashion, decorating, and cooking magazines should equal the total number of magazines. In mathematical terms, this can be represented as: 3 (fashion) + x (decorating) + (x + 5) (cooking) = 18.
6. Solve the equation to find the value of x, which represents the number of decorating magazines.
3 + x + x + 5 = 18
2x + 8 = 18
2x = 18 - 8
2x = 10
x = 5
Therefore, there are 5 decorating magazines in Dr. Gallo's waiting room.