Question:
A person’s present age is two-fifth of the age of his mother. After 8 years, he will be one-half of the age of his mother. How old is the mother at present?
[A].32 years
36 years
40 years
48 years
A person’s present age is two-fifth of the age of his mother. After 8 years, he will be one-half of the age of his mother. How old is the mother at present?
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
Let the mother’s present age be x years.
| Then, the person’s present age = | 2 | x | years. | ||
| 5 |
| 2 | x + 8 | = | 1 | (x + 8) | |||
| 5 | 2 |
2(2x + 40) = 5(x + 8)
x = 40.