Ben, Sean, Julian and Jenson participated in a Science quiz. The average number of points scored by Ben and Sean was 79. The average number of points scored by Sean and Jenson was 70.2. The average number of points scored by Ben, Sean and Jenson was 72. The average number of points scored by Julian and Jenson was 69. How many points did each of them score?

1. Jenson
2. Ben
3. Sean
4. Julian

(a)
Total score of Ben and Sean
= 79 x 2
= 158

Total score of Sean and Jenson
= 70.2 x 2
= 140.4

Total score of Ben, Sean and Jenson
= 72 x 3
= 216

Jenson's score
= 216 - 158
= 58

(b)
Ben's score
= 216 - 140.4
= 75.6

(c)
Sean's score
= 140.4 - 58
= 82.4

(d)
Total score of Julian and Jenson
= 69 x 2
= 138

Julian's score
= 138 - 58
= 80

Answer(s): (a) 58; (b) 75.6; (c) 82.4; (d) 80