50
55
60
65
C. 60
36.5 km/hr
37.5 km/hr
35.5 km/hr
34.5 km/hr
35
45
55
65
40
41
42
43
40
35
45
55
15.5
15
16
Cant be computed
470
468
465
463
50
55
60
65
37
37.8
39
39.8
54.48
54.68
54.60
54.58
33.25
32.25
34.25
34.50
15
20
25
30
35.5
37.5
38.5
40.5
36
37
38
39
70
75
80
85
70
76
78
80
280
285
290
295
9
11
13
15
0
1
5
9
55
56
57
58
x = y + z
2x = y + z
x = 2y + z
x = y + 2z
25
27
29
31
45
50
55
60