Pierre played 5 games of bowling. His scores for the first 4 games were 128, 115, 136 and 163 points respectively.
- Find his average score for the first 4 games.
- After his fifth game, his average score increased by 7.3 points. Find his score for his fifth game.
(a)
Total score of first 4 games
= 128 + 115 + 136 + 163
= 542
Average score of first 4 games
= 542 ÷ 4
= 135.5
(b)
Average score of 5 games
= 135.5 + 7.3
= 142.8
Total score of 5 games
= 5 x 142.8
= 714
Score of Pierre's fifth game
= 714 - 542
= 172
Answer(s): (a) 135.5; (b) 172