Someone has offered you a wager on the outcome of a die roll. You will pay him $100 for each time the standard, six-sided die lands on one, and he will pay you $30 for each time the die lands on any other number. Without your awareness, he has loaded the die so that it has a 50% change to land on the number one, and besides
that an equal change to land on any of the values 2 through 6.

What is the expected
value of one round of gambling in this scenario?

-$5
-$15
-$35
-$25