Jeremy played 5 games of bowling. His scores for the first 4 games were 150, 128, 138 and 138 points respectively.
- Find his average score for the first 4 games.
- After his fifth game, his average score increased by 1.7 points. Find his score for his fifth game.
(a)
Total score of first 4 games
= 150 + 128 + 138 + 138
= 554
Average score of first 4 games
= 554 ÷ 4
= 138.5
(b)
Average score of 5 games
= 138.5 + 1.7
= 140.2
Total score of 5 games
= 5 x 140.2
= 701
Score of Jeremy's fifth game
= 701 - 554
= 147
Answer(s): (a) 138.5; (b) 147