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?
Choose the most appropriate option:
A) 20  B) 30  C) 34  D) 24  E) 12
Number of matches won by the team in June: 30% of 60 = 18   After a phenomenal winning streak the average is 50%   Let the team played x matches continuously and won all of them to achieve an average winning percentage of 50%.   So total matches played by the team = (60+x)   Total matches won by the team = (18+x)   Total matches won = 50% of Total matches played   (18+x) = 50% of (60+x)   18+x = (50/100)*(60+x)   18+x = (1/2)*(60+x)   36+2x = 60+x   x = 24 ANSWER 24
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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?