Question 1055826
P(7)=1/6.  It pays $20, the product is 20/6 or $3.33
p(4)=1/12. It pays $40, the product is 40/12 or 20/6, or $3.33
p of everything else is 1-(1/6+1/12)=3/4.  It cost $14, so that product is $10.50
$6.67-$10.50=minus $3.83 per time played.