Sam now has 30ml of pop to share equally into glasses.
he wants an axact, whole of mls in each. work out the different ways he can share his
pop. what fraction of the whole amount is in each glass?

So whole ml's

30 mls
find what 30 is evenly divisble by
factor 30
30=2 times 3 times 5
therefor
30 is divisble by 2,3,5,6,10,15

so he can divide the glass into 2 sevings which is 30/2=15 ml in each

servings    ml         fraction
2              15            15/30=1/2
3              10              10/30=1/3
5                6             6/30=1/5
6              5                5/30=1/6
10               3              3/30=1/10
15              2              2/30=1/15