The present age of A is 8 years less than B’s present age. If 3 years ago B’s age was X years. Than what is present age of A ?
-
Solution
B – A = 8 years
B = (A + 8) years ⇒ A's present age = B – 8
3 years ago B's age = x year
So present age = x + 3 years
So A's present age = x + 3 – 8
= x – 5 years
The age of Rani is 5 times the age of her daughter. After 12 years the age of Rani will be thrice the age of daughter. Find the present age of Rani’s daughter?
-
Solution
Let Rani's age = 5x
so his daughter = x years.
⇒ (5x + 12) = 3(x+12)
⇒ 2x = 24
⇒ x = 12
The ratio of present age of Pallavi and Raju is 2 : 3. If the present age of Raju is 45 years then present age of Pallavi is? (In years)
-
Solution
If 3 is is equivalent to 45
the 2 will be = × 2 = 30 years
The present age of a person is of his mother. 8 years hence his age will be half of his mother. the present age person is.
-
Solution
Let present age of mother is x years. present age of person ⇒ years
after 8 years = (x +8)
⇒ x = 40
so present age of person is ⇒ 40 × = 16 years
The present age of a father is 2 times of his daughter’s present age, 20 years ago it was 12 times to that of his daughter’s age. what is the present age of father?
-
Solution
Let present age of daughter is x years then father present age is = 2x
at 20 years ago
(2x – 20) = 12 (x – 20)
x = 22
So
Present age of father = 44 years
Asking a person’s age, he told that “My present age is the difference of ages of 3 times of my age 3 years after and 3 times of my age 3 years ago”, what is his present age?
-
Solution
Let present age of Person is = x years.
So 3 (x + 3) – 3(x –3) = x
⇒x = 18 years
18 years ago a person’s age was thrice of his son. At present he is twice as old as his son.What will be the sum of their ages at present ?
-
Solution
Let present age of son = x year then father's present age = 2x year
(2x – 18) = 3 (x-18) ⇒ x = 36
Father's Age = 36 × 2 = 72 years
Required Sum = 36 + 72 = 108 years
6 years ago the ratio of ages of Kamal and Rochit was 6 : 5, four years after the ratio becomes 11 : 10 then prsent age of Rochit is?
-
Solution
Let 6 years ago Kamal's age = 6x years
and Rochit age = 5x years.
Present age ⇒ 6x + 6, 5x + 6
are after four years = 6x + 10, 5x + 10
hence
⇒ 60 x + 100 = 55 x + 110
⇒ 5x = 10
⇒ x = 2
Present age of Rochit ⇒ (5 × 2 + 6) = 16 years
The present ratio of ages of two brothers is 1 : 2. 5 years ago it was 1 : 3 then after 5 years it will be–?
-
Solution
Let A's age = x
and B's age = 2x years.
5 years ago ⇒
⇒ 3x – 15 = 2x – 5
⇒ x = 10
So ratio after 5 years = (x + 5) : (2x + 5)
⇒ 15 : 25
⇒ 3 : 5
The present ratio of ages of Rashiya and Seema is 5 : 7. If after 5 years it becomes 3 :4 then present age of Seema is ?
-
Solution
Let present age of Rashiya = 5x years
and of Seema = 7x years
⇒ 20 x + 20 = 21 x + 15
⇒ x = 5
So present age of Seema = 5 × 7 = 35 years