Well the easiest way to figure this out would be to divide it:
296/20 =
14.8
Sounds if the answer needs to be a whole number so just round it up to 15.
This is because you are wondering how many fortnights' it will take to pay off the bill,
which dividing it is asking how many times does $20 fit into $296, or how many times do I need
to pay $20 to pay off the bill of $296.
Hope this helps
