
is the same as

. The 4s will cancel leaving you with

or

, your 3rd option.
The answer is
A "For every half an hour there is 1/5 of the bucket is filled" Hope I helped
B: Not sure not very good at equations :(
C: Well there is Half an hour so if you multiply that by 5 then its. 2 1/2 hours :)
Hope I helped
15/ 100
To simplify divide both by 5
15/100 / 5 = 3/20
C hope this helps you alot