Justin played 6 games of bowling. His scores for the first 5 games were 102, 104, 157, 146 and 138 points respectively.
- Find his average score for the first 5 games.
- After his fifth game, his average score increased by 6.1 points. Find his score for his sixth game.
(a)
Total score of first 5 games
= 102 + 104 + 157 + 146 + 138
= 647
Average score of first 5 games
= 647 ÷ 5
= 129.4
(b)
Average score of 6 games
= 129.4 + 6.1
= 135.5
Total score of 6 games
= 6 x 135.5
= 813
Score of Justin's sixth game
= 813 - 647
= 166
Answer(s): (a) 129.4; (b) 166