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At the end of last week, a baseball player’s average was .256. One week later, after getting 12 hits in 35 at-bats, the player’s average is now .275. How many hits and how many at-bats does the player now have for the season?

User Prathap
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1 Answer

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Let the player has x hits in y at-bats.

Since players initial average is 0.256, therefore, we can set up an equation:


(x)/(y) =0.256

Further, we are given that player hits 12 in 35 at-bats. Therefore, the total hits are now
(x+12) and total at-bats are now
(y+35).

Since the new average becomes 0.275, therefore, we can set up:


(x+12)/(y+35) =0.275

Our next step is to solve these two equations and get values of x and y.


(x)/(y)=0.256\Rightarrow x=0.256y\\ (x+12)/(y+35)=0.275\Rightarrow x+12=0.275y+9.625\\

Upon using substitution method, we get:


0.256y+12=0.275y+9.625\\ 0.275y-0.256y=12-9.625\\ 0.019y=2.375\\ y=(2.375)/(0.019)=125

We can find the value of x by substituting this value of y in the first equation.


x=0.256(125)\Rightarrow x=32

Therefore, player made 32 hits in 125 at bats.

User Birdy
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