Peter, Jack, Dylan and Asher participated in a History quiz. The average number of points scored by Peter and Jack was 75. The average number of points scored by Jack and Asher was 70.2. The average number of points scored by Peter, Jack and Asher was 70. The average number of points scored by Dylan and Asher was 68. How many points did each of them score?

1. Asher
2. Peter
3. Jack
4. Dylan

(a)
Total score of Peter and Jack
= 75 x 2
= 150

Total score of Jack and Asher
= 70.2 x 2
= 140.4

Total score of Peter, Jack and Asher
= 70 x 3
= 210

Asher's score
= 210 - 150
= 60

(b)
Peter's score
= 210 - 140.4
= 69.6

(c)
Jack's score
= 140.4 - 60
= 80.4

(d)
Total score of Dylan and Asher
= 68 x 2
= 136

Dylan's score
= 136 - 60
= 76

Answer(s): (a) 60; (b) 69.6; (c) 80.4; (d) 76