Juliet is 3 years older than her sister Maggie but 2 years younger than her elder brother Ralph. If Juliet is 10 years old, what is the sum of Maggie's and Ralph's ages?
Use reasoning to answer the following question.
19
Maggie is 3 years younger than Juliet who is 10 years so she is 10 - 3 = 7 years old.

Ralph is 2 years older than Maggie so he is 10 + 2 = 12 years old.

The sum of Maggie's and Ralph's ages is 7 + 12 = 19 years.

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So, the final answer is 19