Bryan played 5 games of bowling. His scores for the first 4 games were 154, 113, 137 and 174 points respectively.
- Find his average score for the first 4 games.
- After his fifth game, his average score increased by 2.1 points. Find his score for his fifth game.
(a)
Total score of first 4 games
= 154 + 113 + 137 + 174
= 578
Average score of first 4 games
= 578 ÷ 4
= 144.5
(b)
Average score of 5 games
= 144.5 + 2.1
= 146.6
Total score of 5 games
= 5 x 146.6
= 733
Score of Bryan's fifth game
= 733 - 578
= 155
Answer(s): (a) 144.5; (b) 155