Respuesta :
Bailey and Marcus bought the dog 6 years ago.
The dog initially weighs 18 pounds.
The dog gains 2 3/4 pounds each year. This simply means the dog add 2 3/4 pounds every year.
The dog current weight is 34 1/2 pounds. The numbers of years he bought the dog can be computed as follows:
Dog added weight = 34.5 - 18 = 16.5 pounds = 16 1/2 = 33 / 2
Number of years = 33/2 ÷ 11 / 4 = 132 / 22 = 6 years
They bought the dog 6 years ago.
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