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4.Average
medium
The average of runs scored by a cricketer in his $99$ innings is $99.$ How many runs will he have to score in his $100^{\text {th }}$ innings so that his average of runs in $100$ innings may be $100 ?$
A
$100$
B
$99$
C
$199$
D
$101$
Solution
Score in $100^{\text {th }}$ innings $=\frac{99 \times 99+x}{100}=100$
$\Rightarrow 9801+x=10000$
$x=199$
Standard 13
Quantitative Aptitude