The ones who are crazy enough to think they can change the world are the ones who do.- Steve Jobs
6. The present age of a father is 3 years more than three times the age of his son. Three yeras hence, father's age will be 10 years more than twice the age of the son. Find the present age of the father.
Option: D
Consider son's present age be X years
The present age of a father is 3 years more than three times the age of his son. i.e) father's present age be (3X + 3) Years
Three yeras hence, father's age will be 10 years more than twice the age of the son
i.e) (3X + 3 + 3) = 2(X + 3) + 10
3X + 6 = 2X + 16
X = 10
i.e) father's present age = (3X + 3) = ((3 * 10) + 3) = 33 Years
7. A person was asked to state his age in years. His reply was, "Take my age three years hence, multiply it by 3 and then subtract three times my age three years ago and you will know how old i am." What was the age of the person?
Option: A
consider the present age of the person be X years
from the qn we know that 3(X + 3) - 3(X - 3) = X
(3X + 9) - (3X - 9) = X
3X + 9 - 3X + 9 = X
i.e) X = 18
Age of the person is 18 years
8. Nisha's father was 38 years of age when she was born while her mother was 36 years old when her brother four younger to her was born. What is the difference between the ages of her parents?
Option: B
Mother's age when Ayesha's brother was born = 36 years
Father's age when Ayesha's brother was born = (38 + 4) years = 42 Years
Required Difference = (42 - 36) = 6 Years
9. A Father said to his daughter, "I was as old as you are at the present at the time of your birth". If the father's age is 38 years now, the daughter's age five years back was:
Option: D
Consider the daughter's present age be X years
then, (38 - X) = X
2X = 38
x = 19
i.e) Daughter's age 5 years back = (19 - 5)years = 14 years.
10. Father is aged three times more than his son Bablu. After 8 years,he would be two and a half times of bablu's age.After further 8 years, how many times would he be of bablu's age?
Option: A
Consider bablu's present age be X years
Father's present age = (X + 3X) years = 4X years
(4X + 8) =
8X + 16 = 5X + 40
3X = 24
X = 8
ratio =
ratio =
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