In the American version of the Game Roulette a wheel has 18

In the American version of the Game Roulette, a wheel has 18 black slots, 8 red slots and 2 green slots.  All slots are the same size.  In a carnival game, a person wagers $2 on the roll of two dice.  A person can wager on either red or black.  Green is reserved for the house.  If a player wagers $5 on either red or black and that color comes up, they win $10 otherwise they lose their wager.  What is the expected value of playing the game once? A) -$0.26 B) -$0.50 C) $0.26 D) $0.50

Solution

option C