In a small family of four members, the ages (in years) of father, mother, son and daughter in that order, are in the descending order and further all the ages are natural numbers. All the four members were spotted at a party with each of them wearing a dress of a different color among black, yellow, white and blue. Each iof them was enquired about the ages of the remaining three persons, for which, their replies were as follows.
Person wearing a black dress: The sum of the ages of all others is 90 years.
Person wearing a yellow dress: The sum of the ages of all others is 70 years.
Person wearing a white dress: The sum of the ages of all others is 80 years.
Person wearing a blue dress: The sum of the ages of all others is 110 years.
It later turned out that all of them made the right statement except one who made an error of 10 while adding the ages.
1. The mother was wearing a dress of which color?
2. What was the age (in years) of the father?
d. Cannot be determined
3. Who has done the error while adding the ages?
4. After how many years would the daughter be as old as what the father in now?
d. None of these
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