Question
12 years ago, Mark was 7t years old.
  1. How old was Mark 5t years ago?
  2. How old will Mark be 3t years later?
2 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

12 years ago, Mark was 7t years old.
  1. How old was Mark 5t years ago?
  2. How old will Mark be 3t years later?