#speeddistance&time
The no. 2 m space from the first to the 10th student = 9
Distance the GOH have walked at the 10^{th} student
9 `xx` 2 = 18 m
(part b)
No. of spacing the GOH have walked across
58 `-:` 2 = 29
No. of student hands the GOH have shaken
29 + 1 = 30
#speeddistance&time
(part a):
P : J
3 : 1
Toatal = 3u + !u = 4u
4u = 7920 m
1u = 1980 m
Peter's distance ran
3u = 1980 `xx` 3 = 5940 m
Peter's speed
5940 `-:` 36 = 165 m/min
(part b):
To be 12760 m apart, Peter has to cover
12760 `xx` `3/4` = 9570m
Time Peter takes to travel 9570 m
9570 `-:` 165 = 58 m
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