A game show contestant is offered the option of receiving a computer system worth

$2500 or accepting a chance to win either a luxury vacation worth $5500

or a boat worth

$6800

If the second option is chosen the contestant's probabilities of winning the vacation or the boat are 0.20 and 0.15, respectively. If the contestant were to turn down the computer system and go for one of the other prizes, what would be the expected winnings?