Multiple choice

Shobo's mother's present age is six times Shobo's present age. Shobo's age five years from now will be one third of the mother's present age. What are their present ages?

  1. Present age of Shobo is $7$ years and his mother is $42$ years
  2. Present age of Shobo is $18$ years and his mother is $54$ years
  3. Present age of Shobo is $5$ years and his mother is $30$ years
  4. Present age of Shobo is $8$ years and his mother is $48$ years
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Let Shobo be x, mother be 6x. In 5 years, Shobo is x+5. Equation: x+5 = 1/3 * (6x). x+5 = 2x, so x = 5. Mother is 6*5 = 30.

AI explanation

Let Shobo's present age be x years, making his mother's present age 6x years. In five years, Shobo's age will be x + 5, which equals one third of his mother's present age, giving the equation x + 5 = 6x / 3. Simplifying the right side gives x + 5 = 2x, so x = 5. Shobo is presently 5 years old and his mother is 30 years old.

Keep practicing — related questions