Student number	Score on exam 1	Score one exam 2
1	12.51	15.3
2	18.46	19.1
3	10.33	9
4	18.38	11.2
5	11.81	11.6
6	12.25	10.3
7	20.21	16.45
8	14.44	10.3
9	19.08	19.3
10	19.78	19.8
11	16.63	17.7
12	16.63	14.25
13	20.13	18.4
14	20.13	16.8
15	8.58	10.4
16	10.5	10.75
17	19.78	15.1
18	12.86	11.6
19	16.19	12.625
20	20.13	10.7
21	18.03	12.4
22	20.13	13.5
23	20.13	19.25
24	16.19	13.05
25	14.88	17.4
26	13.91	17.55
27	16.1	15.5
28	17.06	14.5
29	20.13	17.5
30	18.64	16.2
31	16.36	14.1
32	14.35	13.5
33	19.69	18.5
34	17.5	14.05
35	10.5	14.5
36	18.81	12.85
37	19.69	18.8
38	17.59	19.5
39	16.63	10.8
40	18.81	18.75

only providing the Problem-solving ideas is acceptable . help. please