Seth played 5 games of bowling. His scores for the first 4 games were 109, 119, 112 and 106 points respectively.
- Find his average score for the first 4 games.
- After his fifth game, his average score increased by 3.1 points. Find his score for his fifth game.
(a)
Total score of first 4 games
= 109 + 119 + 112 + 106
= 446
Average score of first 4 games
= 446 ÷ 4
= 111.5
(b)
Average score of 5 games
= 111.5 + 3.1
= 114.6
Total score of 5 games
= 5 x 114.6
= 573
Score of Seth's fifth game
= 573 - 446
= 127
Answer(s): (a) 111.5; (b) 127