Fred played 5 games of bowling. His scores for the first 4 games were 162, 157, 137 and 178 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
= 162 + 157 + 137 + 178
= 634
Average score of first 4 games
= 634 ÷ 4
= 158.5
(b)
Average score of 5 games
= 158.5 + 2.1
= 160.6
Total score of 5 games
= 5 x 160.6
= 803
Score of Fred's fifth game
= 803 - 634
= 169
Answer(s): (a) 158.5; (b) 169