Tom's brother is 4 times as old as Tom's dog. If in 6 years, Tom's brother will be 30 years, how old is Tom's dog going to be in six years?
If in six years Tom's brother will be 30 years old, he is currently 30-6 = <<30-6=24>>24 years old.
Since Tom's brother is 4 times as old as Tom's dog, Tom's dog is 24/4 = <<24/4=6>>6 years old currently.
Tom's dog will be 6+6 = <<6+6=12>>12 years old in six years.
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