 
 <translate> First find how much Mary pays weekly for the trash bins: $10 / trash bin * 2 trash bins = $20. Then add this to the cost of the recycling bin: $20 + $5 = $25. Then multiply the week cost by the number of weeks per month to find the monthly cost: $25 / week * 4 weeks / month = $100 / month. Now calculate Mary's senior discount: 18% * $100 = $18. Now subtract the discount and add the fine to find the total monthly cost: $100 - $18 + $20 = $102. So the answer is 102. <hau> Da farko gano nawa Mary ke biya a mako don kwandon shara: $ 10 / kwandon shara * 2 kwandon shara = $ 20. Sa'an nan kuma ƙara wannan zuwa farashin kwandon sake amfani: $ 20 + $ 5 = $ 25. Sa'an nan kuma ninka farashin mako ta yawan makonni a kowane wata don samun farashin kowane wata: $ 25 / mako * 4 makonni / watan = $ 100 / watan. Yanzu lissafa rangwame na Maryamu: 18% * $ 100 = $ 18. Yanzu sai ka cire kuɗin da aka rage kuma ka ƙara kuɗin don ka samu jimillar kuɗin kowane wata: $100 - $18 + $20 = $102. Amsar ita ce 102. 