Liam played 6 games of bowling. His scores for the first 5 games were 157, 138, 100, 159 and 163 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
= 157 + 138 + 100 + 159 + 163
= 717
Average score of first 5 games
= 717 ÷ 5
= 143.4
(b)
Average score of 6 games
= 143.4 + 1.1
= 144.5
Total score of 6 games
= 6 x 144.5
= 867
Score of Liam's sixth game
= 867 - 717
= 150
Answer(s): (a) 143.4; (b) 150