Jesse has a bottle of lemonade one third has been drunk he shares it between himself and his three friends what fraction of the full bottle do they each get?

Pls! does anybody know a shortcut for answering these types of questions in the future?

Astandard american eskimo dog has a mean weight of 30 pounds with a standard deviation of 2 pounds. assuming the weights of standard eskimo dogs are normally distributed, what range of weights would 99.7% of the dogs have? approximately 26–34 pounds approximately 24–36 pounds approximately 28–32 pounds approximately 29–31 pounds

You can find the constant of proportionality by finding the ratio of