 
 <prompt> Robi ati Rudy ti ṣe iṣowo lati bẹrẹ iṣẹ kan ti o le fẹ́ lati gba wọn owo. Robi ti ṣe iṣowo $4000, tabi Rudy ti ṣe iṣowo 1/4 owo diẹ ninu owo ti Robi ti ṣe. Tẹ o ti ṣe owo ọlọpọ 20 pẹrẹsẹnti lati iṣowo gbogbo, ati wa nípa iṣowo nípa, ṣe iṣowo ti kọja. <response>: ```If Robi contributed $4000, then Rudy contributed 1/4*4000 = $1000 more.
The total amount of money Rudy contributed is $4000+$1000 = $5000
Together, the contributed a total of $5000+$4000 = $9000
They made a 20% profit, a total of 20/100*$9000 = $1800
When they decided to share the profit equally, each received $1800/2 = $900

Answer is 900.``` 