Baseball

Your best friend's batting average is .250.
Your sister's batting average is .333.
What do these numbers mean, and how are they determined?

A player's batting average (B) gives the percentage of hits the player makes when he is at bat. It is found by dividing the total number of hits made (h) by the total times at bat (a): 
B = h/a
So if Joe has 120 hits in the 300 times he is at bat, his batting average is .400 (120/300).
What would Tameka's batting average be if she has been at bat 84 times, but only had 20 hits?
You can also calculate the number of hits a player needs to get a certain batting average.
Plug your known values into the following equation: 
n = [a x (b + e)] - h

where n is the number of hits needed to get a certain average

      a is the desired batting average
      b is the present number of times at bat
      e is the number of times at bat to come, and
      h is the present number of hits
So if a batter presently has 30 hits in a total of 70 times at bat, and he wants to finish the season (38 more times at bat) with a batting average of .450, he must make 19 more hits:
[.450 x (70 + 38)] - 30 = 18.6, which you round up to 19
Why don't you try one....
How many hits must a player make in the next 25 times at bat to get a batting average of .250, when she has so far made 28 hits in the 120 times she's been at bat?
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