On February 1, 2015, a 39-year-old widow buys a new residence for $150,000. Three months later, she

Question:

On February 1, 2015, a 39-year-old widow buys a new residence for $150,000. Three months later, she sells her old residence for $310,000 (adjusted basis of $120,000). Selling expenses totaled $21,000. She lived in the old house for 15 years.
a. Whatare the widow's realized and recognized gain or loss?
b. What is her basis in the new residence?