Answer: $63.16
Explanation:
Probability of winning is
. Which means that it would take 38 spins to win one time.
Since the average player spins 60 times then the number of wins is:
= 1.58
So, the average person wins: ($700 + $20) x 1.58 = $720(1.58) = $1136.84
and the average person spends: $20 x 60 spins = $1200.00
The net gain for the house is $1200.00 - $1136.84 = $63.16