Sam played 6 games of bowling. His scores for the first 5 games were 106, 124, 128, 148 and 115 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
= 106 + 124 + 128 + 148 + 115
= 621
Average score of first 5 games
= 621 ÷ 5
= 124.2
(b)
Average score of 6 games
= 124.2 + 2.3
= 126.5
Total score of 6 games
= 6 x 126.5
= 759
Score of Sam's sixth game
= 759 - 621
= 138
Answer(s): (a) 124.2; (b) 138