Alan, Boris, Cali, and Doris are dividing a cake among themselves. The cake is divided into four slices s1, s2, s3, and s4.
To Boris, the entire cake is worth $18.00 and the value of s4 is $4.00. Boris values s3 twice as much as s1. He values s2 as $1.00 less than s3. What are fair shares to Boris?
◦ {s3}
◦ {s1, s2, s3}
◦ {s2, s3}
◦ {s2}
◦ none of these