1.
Answer B.
2.
Answer B.
3.
Answers A. and C.
Answer:
If the present age is x, then age n years later/hence = x + n. If the present age is x, then age n years ago = x – n. The ages in a ratio a: b will be ax and bx. If the current age is y, then 1/n of the age is y/n.
The constant would be one, because each minute the car travels one mile!
