Question
The father is 5 years older than the mother and five times
as old as the son. If their current age sum is 110 years, after how many years will the father be twice as old as the son?Solution
ATQ,
Let the present age of the son and the father be 'x' years and '5x' years, respectively.
Then, present age of the mother = (5x - 5) years
So, x + 5x + (5x - 5) = 110
Or, 11x - 5 = 110
So, x = (110 + 5) ÷ 11 = 10
Present ages of the son and father are 10 years and 50 years, respectively.
For some 'y',
(10 + y) × 2 = (50 + y)
Or, 20 + 2y = 50 + y
So, y = 30
30 years hence from now, the father will be twice as old as the son
D is the grandmother of _____.
Who among the following is definitely the son of B?
In equation ‘P – Q % R & S + T’, how is T related to R?
Answer the questions based on the information given below.
In a family of three generation, there are eight members M, N, O, P, Q, R, S and T. ...
If ‘A % B’ means ‘A is the daughter of B’, ‘A & B’ means ‘A is the wife of B’, and ‘A # B’ means ‘A is the son of B’, then how i...
If 'A @ B' means 'A is wife of B', 'A $ B' means 'A is father of B', 'A % B' means 'A is brother of B', 'A & B' means 'A is daughter of B'. If 'R & S % ...
How is I related to K?
If G is the daughter of W’s father’s unmarried paternal aunt’s mother’s only son. Then how is mother of W related to the mother of G?
...Which of the following statement is true regarding F?
Z is the son-in-law of Q and is the brother-in-law of W who is the brother of I. I is the daughter of Q. How is W related to Q? Â
