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4.Average
medium
A cricketer had a certain average of runs for his $64$ innings. In his $65^{th}$ innings, he is bowled out for no score on his part. This brings down his average by $2$ runs. His new average of runs is?
A
$130$
B
$128$
C
$70$
D
$68$
Solution
Let average run of a cricketer of $64$ innings be $x$
Total Run scored by the cricketer in $64$ innings $=64 x$
According to the question $=\frac{64 x+0}{65}=x-2$
$64 x=65 x-130 \Rightarrow x=130$
His New average age $=130-2=128$
Standard 13
Quantitative Aptitude