 
 <prompt> ```Rick hold fundraiser and e dey try figure out who still dey owe money. E mark for sheet how much everybody don promise to contribute, but e forget to note how much some people don actually pay. Altogether, everybody don promise to contribute $400, and Rick don actually receive $285. Sally, Amy, Derek, and Carl all still dey owe money. Sally and Carl both dey owe equal amounts, Amy dey owe $30, and Derek dey owe half as much as Amy. How much, in dollars, Sally and Carl each dey owe?``` <response>: ```In total, Rick still dey owe $115.
Derek dey owe half of wetin Amy dey owe, so e dey owe $15.
Dis mean say Sally and Carl dey owe total of $70.
Since dem dey owe equal amounts, dem dey owe $35 each.

The answer go be 35.``` 