Pierre played 6 games of bowling. His scores for the first 5 games were 112, 122, 145, 163 and 117 points respectively.
- Find his average score for the first 5 games.
- After his fifth game, his average score increased by 7.7 points. Find his score for his sixth game.
(a)
Total score of first 5 games
= 112 + 122 + 145 + 163 + 117
= 659
Average score of first 5 games
= 659 ÷ 5
= 131.8
(b)
Average score of 6 games
= 131.8 + 7.7
= 139.5
Total score of 6 games
= 6 x 139.5
= 837
Score of Pierre's sixth game
= 837 - 659
= 178
Answer(s): (a) 131.8; (b) 178