Question

Ajit tendulkar has a certain average for 9 innings. in the tenth inning, he scores 100 runs there by increasing his average by 8 runs. his new average is

Answer 1

hola

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let the sum of runs be x

Ajit tendulkar has a certain average for 9 innings.

no.of innings  = 9  = $\frac{x}{9}$

=> sum = 9x


in the tenth inning, he scores 100 runs there by increasing his average by 8 runs.

new average = x + 8

so lets form an equation

=> $\frac{9x+100}{10} = x + 8$

=>$9x+100 = 10x+80$

=> x = 100-80

=>x = 20

=> old average is 20

new average  = x +8

x is 20 = 20+8 = 28

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hope it helps