Justin played 5 games of bowling. His scores for the first 4 games were 126, 135, 111 and 122 points respectively.
- Find his average score for the first 4 games.
- After his fifth game, his average score increased by 2.3 points. Find his score for his fifth game.
(a)
Total score of first 4 games
= 126 + 135 + 111 + 122
= 494
Average score of first 4 games
= 494 ÷ 4
= 123.5
(b)
Average score of 5 games
= 123.5 + 2.3
= 125.8
Total score of 5 games
= 5 x 125.8
= 629
Score of Justin's fifth game
= 629 - 494
= 135
Answer(s): (a) 123.5; (b) 135