In a game, each player starts with 100 points. In each round, a player can gain or lose points. After 5 rounds, Alice has 130 points, Bob has 90 points, Charlie has 120 points, and David has 110 points. If David gained 30 points in the first 3 rounds, how many points did he lose in the last 2 rounds ? 

Given :

• In a game, each player starts with 100 points.
• In each round, a player can gain or lose points.
• After 5 rounds, Alice has 130 points, Bob has 90 points, Charlie has 120 points, and David has 110 points.

Explanation :

According to the question David gained 30 points in the first 3 rounds, Therefore, David's points can be calculated as follows: 

Initial points = 100 

Points after 3 rounds = 100 + 30 = 130

Points after 5 rounds = 110

Now, points David lose in the last 2 rounds :

⇒ (Points after 3 rounds - Points after 5 rounds)

⇒ 130 - 120 = 20 Points