In October 2016, Jack, a single taxpayer, sold IBM stock for $12,000, which he purchased 4 years ago for $4,000. He also sold GM stock for $14,000, which cost $17,500 3 years ago, and he had a short-term capital loss of $1,800 on the sale of land.

If Jack's other taxable income (salary) is $78,000, what is the amount of Jack's tax on these capital transactions?