For the following questions answer them individually
If '$$\times$$' means '$$\div$$', '$$-$$' means '$$\times$$', '$$\div$$' means '$$+$$' and '$$+$$' means '$$-$$', then $$3 - 15 \div 16 \times 8 + 6 = ?$$
Ten years ago, a mother was thrice as old as her son. After 10 years, she will be twice as old as her son. What is the ratio of their present ages?
Ramya walked eastwards and turned to her left. She turned right two times. Which direction is she walking now?