3. Tiger runs a sole trader business. His accounting profit for the year ended 31st December 2019 was 250,000, which when adjusted for tax amounted to 265,000. His accounting profit for the year ended 31st December 2020 was 280,000, which when adjusted for tax amounted to 300,000. What is Tiger's class 4 NIC liability for the 2019/20 tax year? 4. Gabby purchased 150 acres of land in January 2000 for 100,000. (2 marks) She sold 80 out of the 150 acres on 4th January 2020 for 200,000 with the market value of the remaining 70 acres at that time valued at 180,000. Gabby has made no other disposals in the tax year and has taxable income of 45,000. Calculate the after-tax proceeds that Gabby will receive as a result of the sale. (2 marks)