Question

saturday, nola bowled 3 games in her bowling league. she had a mean score of 115. the score of her first game was 110. the score of her second game was 90. what was the score of her third game?
A.145
B.345
C.140
D.225

Answer 1

110+90+145=345
345 divided by 3=115

so the score of her third game was 145 points.
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Answer 2

Answer: A.145

Step-by-step explanation:

Given : Nola bowled 3 games in her bowling league.

She had a mean score of 115.

The score of her first game was 110.

The score of her second game was 90.

Let x denotes the score of her third game.

The formula to find the mean score is given by  :-

$\text{Mean score}=\dfrac{\text{Sum of scores }}{\text{Number of tests}}\\\\\Rightarrow\ 115=\dfrac{110+90+x}{3}$

Multiply 3 on both the sides, we get

$345=200+x$

Subtract 200 from both the sides , we get

$x=345-200=145$

Therefore. the score of her third game = 145