Multiple choice general knowledge math & puzzles

In June a baseball team that played 60 games had won 30% of its game played. After a phenomenal winning streak this team raised its average to 50% .How many games must the team have won in a row to attain this average?

  1. 12

  2. 20

  3. 24

  4. 30

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Initially, the team won 18 games (30% of 60). Let 'x' be the wins in a row. (18 + x) / (60 + x) = 0.5. Solving for x: 18 + x = 30 + 0.5x; 0.5x = 12; x = 24.