Luke played 5 games of bowling. His scores for the first 4 games were 168, 112, 136 and 142 points respectively.
- Find his average score for the first 4 games.
- After his fifth game, his average score increased by 5.7 points. Find his score for his fifth game.
(a)
Total score of first 4 games
= 168 + 112 + 136 + 142
= 558
Average score of first 4 games
= 558 ÷ 4
= 139.5
(b)
Average score of 5 games
= 139.5 + 5.7
= 145.2
Total score of 5 games
= 5 x 145.2
= 726
Score of Luke's fifth game
= 726 - 558
= 168
Answer(s): (a) 139.5; (b) 168