Bobby played 6 games of bowling. His scores for the first 5 games were 154, 104, 103, 108 and 173 points respectively.
- Find his average score for the first 5 games.
- After his fifth game, his average score increased by 5.1 points. Find his score for his sixth game.
(a)
Total score of first 5 games
= 154 + 104 + 103 + 108 + 173
= 642
Average score of first 5 games
= 642 ÷ 5
= 128.4
(b)
Average score of 6 games
= 128.4 + 5.1
= 133.5
Total score of 6 games
= 6 x 133.5
= 801
Score of Bobby's sixth game
= 801 - 642
= 159
Answer(s): (a) 128.4; (b) 159