We previously noted:
The nuns in The Sound of Music ponder, "How do you solve a problem like Maria?"
We found the answer in a volume by Eliza Marian Butler entitled The Saint-Simonian Religion in Germany (1926):
The "solution of Maria's problem" is her "conversion to the Protestant faith."
UPDATE courtesy of Jonathan Caws-Elwitt:
Q. How Do You Solve a Problem Like Maria?
A. Borrow Maria's calculator and Maria's pencil.