SOLUTION: A character is criticized for marrying a woman when he is 3 times her age. He wittily replies, "Ah but in 20 years time I shall only be twice her age." How old are the man and the
M = 3W
M+20 = 2(W+20)
Simplify and solve that system by substitution
and get W = 20, M = 60.
Checking: 60 is 3 times 20. That checks.
In 20 years he will be 80 and she will be 40.
80 is 2 times 40. That checks.
Edwin