It is all about changing what you said into equations.. Let us say that the food and med for each dog = x and the and med for each cat = y Since Food & med for each dog costs 2 times as much as those for a cat --> x = 2y She feeds 164 cats & 24 dogs with budget: $4240 --> 24x + 164 y = $4240, since x =2y, then; 24 (2y) + 164y = 4240 48y + 164y = 4240 212 y = 4240 --> y = 4240/212 = $20 x = 2y = 2 x 20 = $40 That's all..I hope you got it, please if anything unclear feel free to comment on my answer. Good Luck :)
A total of $40 will be spent on each dog in this case. To get this, we first use x to represent the amount spent on the dog for food as well as medication. Y will represent the amount spent on the cat. Therefore, we'll have 24x + 164 y = $4240. The overall equation is 24 (2y) + 164y = 4240, which is simplified to 48y + 164y = 4240. The value of y is $20. Since x = 2y, 2y will be 2 x $20 to get $40.