Confirmation of receipt of 30$
You Received
0.08726511 BTC ($ 30.01)
Value at time of transaction $ 30.00
The OP and the title states the reward is 0.1btc, you received 0.087btc, 13% less than promised. I would feel cheated myself.
He said $30 and he paid him $30.
No cheating.
Noobs on this forum are getting worse and worse. There is a section for people like you, "Beginners & Help", which is where you belong.
Once you are trained to post properly, you can leave that section.
Look at the title of this thread.