Question

Ms. Jhulan Goswami scores $102$ runs in the ${18}^{th}$ innings of her career and thus increases her average by $5$. After the ${18}^{th}$ inning, her average is

• A. $17$
• B. $21$
• C. $26$
• D. $28$

Answer 1

The correct option is A $17$

Let average after ${17}^{th}$ inning $=x$
According to the question,
$\frac{17x+102}{18}=x+5$
$\Rightarrow 17x+102=18x+90$
$\Rightarrow 12=x$
Increased average $=12+5=17$.