Michael played 6 games of bowling. His scores for the first 5 games were 129, 148, 110, 137 and 138 points respectively.
- Find his average score for the first 5 games.
- After his fifth game, his average score increased by 1.1 points. Find his score for his sixth game.
(a)
Total score of first 5 games
= 129 + 148 + 110 + 137 + 138
= 662
Average score of first 5 games
= 662 ÷ 5
= 132.4
(b)
Average score of 6 games
= 132.4 + 1.1
= 133.5
Total score of 6 games
= 6 x 133.5
= 801
Score of Michael's sixth game
= 801 - 662
= 139
Answer(s): (a) 132.4; (b) 139