jack and june are retired and receive $10,000 of social security benefits and taxable pensions totaling $25,000. they have been offered $20,000 for...

jack and june are retired and receive $10,000 of social security benefits and taxable pensions totaling $25,000. they have been offered $20,000 for an automobile that they restored after they retired. they did most of the restoration work themselves and the sale will result in a gain of $12,000.  what tax issues should jack and june consider?