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Question

Aman is his $${12^{th}}$$ innings makes a score of 63 runs and increases his average score to 2.What is his average after the $${12^{th}}$$  innings ?


A
15
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B
29
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C
69
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D
41
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Solution

The correct option is C 41
Let the average score till 11th innings be $$x$$ according to question
$$\Rightarrow$$ $$\cfrac{11x+63}{12}=x+2$$
$$\Rightarrow$$ $$11x+63=12x+24$$
$$\Rightarrow$$ $$x=39$$
$$\therefore$$ 12th inning average $$\Rightarrow$$ $$39+2=41$$

Mathematics

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