1311.The ages of Krish and Vaibhav are in the proportion of 3 : 5. After 9 years, the proportion of their ages will be 3 : 4. Then the current age of Vaibhav is:
19 years
12 years
10 years
15 years
Explanation:
Krish’s age = 3A and Vaibhav’s age = 5A
(3A+9)/(5A+9) = 3/4
=> 4 (3A + 9) = 3 (5A + 9)
=> A = 3
Therefore, Vaibhav’s age = 15 years.
(3A+9)/(5A+9) = 3/4
=> 4 (3A + 9) = 3 (5A + 9)
=> A = 3
Therefore, Vaibhav’s age = 15 years.
1312.Sajithas age is one-sixth of her mothers age. Sajithas mothers age will be two times of Karthikhs age after 10 years. If Karthikhs 8-th birthday was celebrated 2 years before, then what is Sajithas current age?
15 years
6(2/3) years
5(1/2) years
12(3/4) years
Explanation:
Karthikh's present age
= (8 + 2) years
= 10 years
Sajitha's father's age
= 2(10 + 10) years
= 40 years
Sajitha's age
= ($\dfrac{1}{6} $×40) years
= $\dfrac{20}{3}$ years
= 6 $\dfrac{2}{3}$years
= (8 + 2) years
= 10 years
Sajitha's father's age
= 2(10 + 10) years
= 40 years
Sajitha's age
= ($\dfrac{1}{6} $×40) years
= $\dfrac{20}{3}$ years
= 6 $\dfrac{2}{3}$years
1313.5 years ago Amith was three times as old as his daughter and 10 years hence, he will be two times as old as his daughter. Then Amiths current age is,
7 years
None of these
55
50
Explanation:
Let the present age of Amit be x.
Let the present age of daughter be y.
Given that 5 years ago Amit was three times as old as daughter.
x - 5 = 3 * (y - 5)
x - 5 = 3y - 15
x = 3y - 10 ------ (1)
Given that ten years later Amit would be twice as old as daughter.
x + 10 = 2(y + 10)
x + 10 = 2y + 20
x = 2y + 10 ---- (2)
On solving (1) and (2), we get
3y - 10 = 2y + 10
3y = 2y + 20
3y - 2y = 20
y = 20 ---- (3)
Substitute (3) in (1), we get
x = 3y - 10
= 3(20) - 10
= 50.
Therefore the present age of Amit is 50.
Let the present age of daughter be y.
Given that 5 years ago Amit was three times as old as daughter.
x - 5 = 3 * (y - 5)
x - 5 = 3y - 15
x = 3y - 10 ------ (1)
Given that ten years later Amit would be twice as old as daughter.
x + 10 = 2(y + 10)
x + 10 = 2y + 20
x = 2y + 10 ---- (2)
On solving (1) and (2), we get
3y - 10 = 2y + 10
3y = 2y + 20
3y - 2y = 20
y = 20 ---- (3)
Substitute (3) in (1), we get
x = 3y - 10
= 3(20) - 10
= 50.
Therefore the present age of Amit is 50.
1314.Ayesha's father was 38 years of age when she was born while her mother was 36 years old when her brother four years younger to her was born. What is the difference between the ages of her parents?
5 years
6 years
1 years
3 years
Explanation:
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) years = 6 years.
Father's age when Ayesha's brother was born = (38 + 4) years = 42 years.
∴ Required difference = (42 - 36) years = 6 years.
1315.A guy was asked to specify his age in years. He said, “Take my age 3 years hence, multiply it by three and subtract thrice of my age 3 years ago and you will know my age.” What was the age of that guy?
5 years
6 years
16 years
18 years
Explanation:
Lets assume his current age is ‘x’.
His age 3 years from now: (x+3)
His age 3 years earlier: (x-3).
As per what is stated, his current age is - 3(x+3) - 3(x-3)
therefore, solve x= 3x + 9 - 3x + 9
The answer is x = 18
c
His age 3 years from now: (x+3)
His age 3 years earlier: (x-3).
As per what is stated, his current age is - 3(x+3) - 3(x-3)
therefore, solve x= 3x + 9 - 3x + 9
The answer is x = 18
c
1316.What least number must be added to 859622, to get a number exactly divisible by 456?
20 years
22 years
321
394
Explanation:
Dividend = Quotient * Divisor + Reminder
859622 / 456 gives quotient = 1885 and reminder = 62.
So, the next number divisible by 456 is 456 places infront of 456 * 1885
Which means 456 – 62 = 394 should be added to 859622.
859622 / 456 gives quotient = 1885 and reminder = 62.
So, the next number divisible by 456 is 456 places infront of 456 * 1885
Which means 456 – 62 = 394 should be added to 859622.
1334.Rajeevs age after 15 years will be 5 times his age 5 years back. What is the present age of Rajeev ?
11
10
12
8
Explanation:
Let Rajeevs present age be x years. Then,
Rajeevs age after 15 years = (x + 15) years.
Rajeevs age 5 years back = (x - 5) years.
Therefore x + 15 = 5 (x - 5)
x + 15 = 5x - 25
4x = 40
x = 10.
Hence, Rajeevs present age = 10 years
Let Rajeevs present age be x years. Then,
Rajeevs age after 15 years = (x + 15) years.
Rajeevs age 5 years back = (x - 5) years.
Therefore x + 15 = 5 (x - 5)
x + 15 = 5x - 25
4x = 40
x = 10.
Hence, Rajeevs present age = 10 years
1335.The ages of two persons differ by 16 years. If 6 years ago, the elder one be 3 times as old
as the younger one, find their present ages.
as the younger one, find their present ages.
14,30
12,36
14,21
16,36
Explanation:
Let the age of the younger person be x years.
Then, age of the elder person = (x + 16) years.
Therefore 3 (x - 6) = (x + 16 - 6)
3x -18 = x + 10
2x = 28
x = 14.
Hence, their present ages are 14 years and 30 years.
Let the age of the younger person be x years.
Then, age of the elder person = (x + 16) years.
Therefore 3 (x - 6) = (x + 16 - 6)
3x -18 = x + 10
2x = 28
x = 14.
Hence, their present ages are 14 years and 30 years.
1336.The product of the ages of Ankit and Nikita is 240. If twice the age of Nikita is more than
Ankits age by 4 years, what is Nikitas age?
Ankits age by 4 years, what is Nikitas age?
10
12
13
15
Explanation:
Let Ankits age be x years. Then, Nikitas age = 240/x years.
2 * (240 /x ) – x = 4
480 – x2 = 4x
x2 + 4x – 480 = 0
( x+24)(x-20) = 0
x = 20.
Hence, Nikitas age = 240/x = 240/20 years = 12 years.
Let Ankits age be x years. Then, Nikitas age = 240/x years.
2 * (240 /x ) – x = 4
480 – x2 = 4x
x2 + 4x – 480 = 0
( x+24)(x-20) = 0
x = 20.
Hence, Nikitas age = 240/x = 240/20 years = 12 years.
1337.The present age of a father is 3 years more than three times the age of his son. Three
years hence, fathers age will be 10 years more than twice the age of the son. Find the
present age of the father.
years hence, fathers age will be 10 years more than twice the age of the son. Find the
present age of the father.
33
35
31
32
Explanation:
Let the sons present age be x years. Then, fathers present age = (3x + 3) years
(3x + 3 + 3) = 2 (x + 3) + 10
3x + 6 = 2x + 16
x = 10.
Hence, fathers present age = (3x + 3) = ((3 * 10) + 3) Years= 33 Years
Let the sons present age be x years. Then, fathers present age = (3x + 3) years
(3x + 3 + 3) = 2 (x + 3) + 10
3x + 6 = 2x + 16
x = 10.
Hence, fathers present age = (3x + 3) = ((3 * 10) + 3) Years= 33 Years