Simon, Julian, Tommy and Oliver participated in a Science quiz. The average number of points scored by Simon and Julian was 76. The average number of points scored by Julian and Oliver was 71.1. The average number of points scored by Simon, Julian and Oliver was 71. The average number of points scored by Tommy and Oliver was 68. How many points did each of them score?

1. Oliver
2. Simon
3. Julian
4. Tommy

(a)
Total score of Simon and Julian
= 76 x 2
= 152

Total score of Julian and Oliver
= 71.1 x 2
= 142.2

Total score of Simon, Julian and Oliver
= 71 x 3
= 213

Oliver's score
= 213 - 152
= 61

(b)
Simon's score
= 213 - 142.2
= 70.8

(c)
Julian's score
= 142.2 - 61
= 81.2

(d)
Total score of Tommy and Oliver
= 68 x 2
= 136

Tommy's score
= 136 - 61
= 75

Answer(s): (a) 61; (b) 70.8; (c) 81.2; (d) 75