Instructions
You have been randomly and anonymously paired with another participant.
One of you will be selected at random to be participant A;
the other will be participant B.
You will learn whether you are participant A or B prior to making any
decision.
To start, participant A receives 100.0 ;
participant B receives
nothing.
Participant A can send some or all of
his 100.0 to participant B.
Before B receives this amount, it will be multiplied
by 3. Once B receives
the tripled amount he can decide to send some or all of it to
A.