Sam played 6 games of bowling. His scores for the first 5 games were 151, 120, 138, 102 and 165 points respectively.
- Find his average score for the first 5 games.
- After his fifth game, his average score increased by 2.3 points. Find his score for his sixth game.
(a)
Total score of first 5 games
= 151 + 120 + 138 + 102 + 165
= 676
Average score of first 5 games
= 676 ÷ 5
= 135.2
(b)
Average score of 6 games
= 135.2 + 2.3
= 137.5
Total score of 6 games
= 6 x 137.5
= 825
Score of Sam's sixth game
= 825 - 676
= 149
Answer(s): (a) 135.2; (b) 149