Stakes are the one that act as payment for the participants on such campaigns, these stakes are already been set by the ICO/ the developer of such project and equally divided depending on their rank.
They can't set any fix tokens on every accomplishment of every participants, it is because the number of tokens allocated on such project may change rapidly depending on the bounty campaign pool. This is why they stick on giving a stake and does'n give any fix amount of token as payment.
There are certain formula to be followed on converting Stakes to tokens, you can ask the formula of it directly to the developer/ICO or message it on their slack telegram and help&support. But i think the formula of it is
Bounty Campaign pool / total number of stakes mined during the campaign * number of stakes you earned
Thank you for your time but isn't the stake system of calculating bounty reward a bad way to reward participant for their effort?
why?1. bounty manager/project owner allow unlimited number of participant to take part in the campaign there-by increasing the number of stake and reducing the earning potential for each participant, Managers do this is put themself in a safe net not to spend overly for the campaign and pay penny to participants of this campaign. if a specific ether was paid for the task, project owner would be forced to limit the number of participant to avoid over burget.