Richard exchanges an office building used in business for one owned by Summer. T

Richard exchanges an office building used in business for one owned by Summer. The FMV of Riachard's building is $350,000 ( basis $150,000) and it is subject to a mortgage of $60,000 which is assumed by Summer. Richard receives $40,000 in cash and Summer's office building, which has a FMV of $250,000 ( basis of $180,000). Richard realizes a gain / loss on the exchange of?