Question: A man is 10 years older than his wife. If the sum of their ages is 70 years, how old is the wife?
Options:
Correct Answer: 25
Solution:
Let the wife\'s age be x. Then the man\'s age is x + 10. The equation is x + (x + 10) = 70, which simplifies to 2x + 10 = 70, so 2x = 60, and x = 30.