Problema Solution
A mother is 23 years older than her son. In 7 years she will be twice as old as the daughter. How old is each now?
Answer provided by our tutors
If we assume x is the sons age and y is the mothers age, then y - x = 23 and 2 * (x + 7) = y + 7, then we can solve this by elimination, get -y + 2x = -7, so x = 16 and y = 39