Julian played 5 games of bowling. His scores for the first 4 games were 103, 115, 173 and 179 points respectively.
- Find his average score for the first 4 games.
- After his fifth game, his average score increased by 1.3 points. Find his score for his fifth game.
(a)
Total score of first 4 games
= 103 + 115 + 173 + 179
= 570
Average score of first 4 games
= 570 ÷ 4
= 142.5
(b)
Average score of 5 games
= 142.5 + 1.3
= 143.8
Total score of 5 games
= 5 x 143.8
= 719
Score of Julian's fifth game
= 719 - 570
= 149
Answer(s): (a) 142.5; (b) 149