 
 <prompt> Tara ti wọle ni iranlọwọ latop ti o kọ $1000. Aṣọ funra ni owo ni owo ti o kọ $65 ni oṣu kan ti o ṣe funra pe iranlọwọ ti o kọ $1000. Ti Tara fẹ lati funra $20 pẹlu iranlọwọ, bẹẹni owo rẹ yoo jẹ nibe ni owo ti o ṣe funra pe 4 oṣu? <response>: Tara gbọdọ ṣe iṣẹ lati ṣe iṣiro $1000 x 20/100 = $200.
Nitori pe Tara fẹ lati ṣe iṣiro $20 diẹ, iṣiro ti Tara yoo ṣe yoo jẹ $200 + $20 = $220.
Nigba ti Tara fẹ lati fi $780 sọtay ni oṣu kan, iṣiro ti Tara yoo ṣe yoo jẹ $1000 - $220 = $780.
Tara gbọdọ ṣe iṣẹ oṣu kan ni $780/ọdua / 12 oṣu/ọdua = $65/oṣu.
Iṣiro gbogbo iṣẹ rẹ fun 4 oṣu jẹ $65/oṣu x 4 oṣu = $260.
Nítorí náà, iṣiro Tara lẹhin 4 oṣu jẹ $780 - $260 = $520.

Ìrọ̀ yìí yoo jẹ 520. 