Jeff needs to buy food and medication for six cats and one dog. the cost of food and medication for a cat is $5 less than two-thirds of the cost of food and medication for a dog. if jeff spends a total of $195, the amount he spent on food and medication for the dog is $?

Let x be the amount that Jeff spent for the food and medication of his dog. With this representation, the cost of food and medication for each cat is 2x/3 - 5. The equation that best represent the given situation is,
                            x + 6(2x/3 - 5) = 195
The value of x from the equation is 45. Thus, Jeff spent $45 for his dog.