Riddle: When Grant was 8, his brother was half his age. Now, Grant is 14. How old is his brother?
Answer: His brother is 10. Half of 8 is 4, so Grant’s brother is 4 years younger. This means when Grant is 14, his brother is still 4 years younger, so he’s 10.
Riddle: I am nothing, I am everything. I am perfect dark, I am the brightest lights. I am hungry, I am full. I am nowhere, I am everywhere. I am unseen, I am watched by millions. What am I?