Q: Mason is three times younger than Sydney and Sydney is six years younger than Mason's father. If Mason is 20 years old, how old is his father?
A: Sydney is 20 * 3 = 60 years old. Mason's father is 60 + 6 = 66 years old. The answer is 66.

Q: Troy is thinking of buying a new computer that is worth $80. He has initially saved $50 and plans to sell his old computer for $20. How much more money does he need so he could buy the new computer?
A: Troy has $50 + $20 = $70 from his savings and the sales of his old computer. Therefore, he still needs $80 - $70 = $10 more to buy the new computer. The answer is 10.

Q: A bag full of sugar weighs 16 kg. A bag full of salt weighs 30 kg. If you remove 4 kg from the combined weight of these two bags, how much do the bags now weigh?
A:
The bags together weigh 16 + 30 = 46 kg. Removing the 4 kg, the bags will weigh 46 - 4 = 42 kg. The answer is 42.