George played 6 games of bowling. His scores for the first 5 games were 168, 173, 102, 173 and 122 points respectively.
- Find his average score for the first 5 games.
- After his fifth game, his average score increased by 3.9 points. Find his score for his sixth game.
(a)
Total score of first 5 games
= 168 + 173 + 102 + 173 + 122
= 738
Average score of first 5 games
= 738 ÷ 5
= 147.6
(b)
Average score of 6 games
= 147.6 + 3.9
= 151.5
Total score of 6 games
= 6 x 151.5
= 909
Score of George's sixth game
= 909 - 738
= 171
Answer(s): (a) 147.6; (b) 171