Question Details

Sujit is three times as old as his son, and his daughter is 3 years younger than the son. If the sum of the ages of these three people 3 years ago from now was 88 years, then Sujit's present age (in years) is

Options

A

48

B

66

C

56

D

60

Show Answer

Correct Answer :

Option D

60

Solution :

The correct option is 60.

To find Sujit's present age, we can set up an algebraic equation based on the relationships given in the problem.

Step 1: Define the variables for their present ages
Let the present age of the son be x years.
According to the problem:

  • Sujit is three times as old as his son, so Sujit's present age is 3x years.
  • His daughter is 3 years younger than the son, so the daughter's present age is x-3 years.

Step 2: Determine their ages 3 years ago
To find their ages 3 years ago, we subtract 3 from each of their present ages:

  • Sujit's age 3 years ago: 3x-3 years
  • Son's age 3 years ago: x-3 years
  • Daughter's age 3 years ago: (x-3)-3=x-6 years

Step 3: Set up the sum equation
The sum of their ages 3 years ago was 88 years. We can write this as:
( 3 x - 3 ) + ( x - 3 ) + ( x - 6 ) = 88

Step 4: Solve for x
Combine the like terms on the left side of the equation:
5 x - 12 = 88
Add 12 to both sides of the equation:
5 x = 100
Divide both sides by 5:
x = 20
So, the son's present age is 20 years.

Step 5: Calculate Sujit's present age
Now, substitute the value of x back into the expression for Sujit's present age:
3 x = 3 × 20 = 60
Therefore, Sujit's present age is 60 years.

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