Answer:
When is 1500 plus 20 and 1600 minus 40 the same thing?
What is something you can hold without ever touching?
A person who chews the ends of their fingers
What gets colder as it warms up?
It carries paper of the most important sort but also plastic, I'm glad to report. What is it?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?