Are you sure you want to leave?

Your test is still in progress. If you leave this page or go back now, all your attempt wil not be saved.

In a certain game, players earn points by solving easy or hard puzzles.

An easy puzzles scores 30 points, while a hard puzzle scores 50 points.

Tina solved a total of 10 puzzles playing this game, earning 440 points in total.

How many hard puzzles did Tina solve?