Pierre played 5 games of bowling. His scores for the first 4 games were 152, 129, 147 and 142 points respectively.
- Find his average score for the first 4 games.
- After his fifth game, his average score increased by 6.7 points. Find his score for his fifth game.
(a)
Total score of first 4 games
= 152 + 129 + 147 + 142
= 570
Average score of first 4 games
= 570 ÷ 4
= 142.5
(b)
Average score of 5 games
= 142.5 + 6.7
= 149.2
Total score of 5 games
= 5 x 149.2
= 746
Score of Pierre's fifth game
= 746 - 570
= 176
Answer(s): (a) 142.5; (b) 176