George played 5 games of bowling. His scores for the first 4 games were 102, 171, 133 and 176 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
= 102 + 171 + 133 + 176
= 582
Average score of first 4 games
= 582 ÷ 4
= 145.5
(b)
Average score of 5 games
= 145.5 + 2.3
= 147.8
Total score of 5 games
= 5 x 147.8
= 739
Score of George's fifth game
= 739 - 582
= 157
Answer(s): (a) 145.5; (b) 157