A new mathematical challenge from Sonya

Once upon a time, in the distant past, BuzzCity was a kingdom in which Sonya’s ancestor was the queen, or that’s what she likes to think!

Queen Sonya Elizabeth’s kingdom of BuzzCity was divided into 4 large regions and she had a castle in each.

Wishing to organize a grand and sumptuous reception with the heads of State of Buzzengard and Buzzarnia, neighboring kingdoms, she asked her advisor which of her castles was the most appropriate. For this, the advisor had to determine the value of each castle.

Help him find the value of castle D, knowing that castle A is worth 30, castle B is worth 48 and castle C is worth 51.

sonya_challenge_20172501

Did you find it? Push your skills to the limit with other challenges.

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