Problem with Calculating %age.

I was going over a standardized test question involving percentages. The question is as follows

Quote:

In June a baseball team that had played 60 games had won 30% of its games played.Later after a winning streak the team raised the average to 50%.

How many games must the teams have won in a row to attain this average ?

The answer to this problem is 24.

I cant manage to find out how they got 24 as the answer. Any suggestion would be appreciated. One reason i cant figure this out is because it doesnt state how many games they played later on ... I might be wrong. Any help would be appreciated.

Re: Problem with Calculating %age.

30% of 60 is 18.

Therefore after 60 games they had won 18 and lost 42, to then go on a winning streak to achieve 50% to be wins then they require the 18 to increase to 42 (the same as the amount of losses). What is 42 take 18?

Re: Problem with Calculating %age.

I think i almost have it.. Though i am a bit confused at the part you said

Quote:

to then go on a winning streak to achieve 50% to be wins then they require the 18 to increase to 42 (the same as the amount of losses)

Why do they need to increase 18 to 42 ? So far i know that they have lost 42 games. Could you elaborate on why they need the 42 ?

Re: Problem with Calculating %age.

because 42 wins & 42 losses is then 50% win. This should be clear...(Wink)