Ryan played 6 games of bowling. His scores for the first 5 games were 118, 105, 178, 145 and 126 points respectively.
- Find his average score for the first 5 games.
- After his fifth game, his average score increased by 1.1 points. Find his score for his sixth game.
(a)
Total score of first 5 games
= 118 + 105 + 178 + 145 + 126
= 672
Average score of first 5 games
= 672 ÷ 5
= 134.4
(b)
Average score of 6 games
= 134.4 + 1.1
= 135.5
Total score of 6 games
= 6 x 135.5
= 813
Score of Ryan's sixth game
= 813 - 672
= 141
Answer(s): (a) 134.4; (b) 141