Question 1
The difference of two numbers is 3. Their sum is 13. Find the numbers.
Question 2
Xavier and Yannic went to an arcade where the machines took tokens. Xavier played 4 games of skee ball and 3 games of pinball, using a total of 17 tokens. At the same time, Yannic played 4 games of skee ball and 4 games of pinball, using up 20 tokens. How many tokens does each game require?