NOTE: since the duration was given in years, you have to convert the years to months before multiplying the cost per monthThere are 12 months in a yearHalf a year is 6 monthsHence 211 years =12 months +6 months =18 months Method IUsing proportionality.Per month means every (1) month.If 1 month =GH₵918 months =1 month GH₵ 9×18 months= GH₵ 9×18= GH₵ 162.00 Method IITotal Amount paid = Total Months × Cost per monthTotal amount paid =18 months × GH₵ 9.00 per monthTotal amount paid =18×9=GH₵1 61 6 2 . 0 0