Question: In a certain game, a player can solve easy or hard puzzles. A player earns 30 points for solving an easy puzzle and 60 points

In a certain game, a player can solve easy or hard puzzles. A player earns 30 points for solving an easy puzzle and 60 points for solving a hard puzzle. Tina solved a total of 50 puzzles playing this game, earning 1,950 points in all.

How many hard puzzles did Tina solve?

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