Aptitude - Average - Discussion
Discussion Forum : Average - General Questions (Q.No. 8)
8.
The average age of husband, wife and their child 3 years ago was 27 years and that of wife and the child 5 years ago was 20 years. The present age of the husband is:
Answer: Option
Explanation:
Sum of the present ages of husband, wife and child = (27 x 3 + 3 x 3) years = 90 years.
Sum of the present ages of wife and child = (20 x 2 + 5 x 2) years = 50 years.
Husband's present age = (90 - 50) years = 40 years.
Discussion:
102 comments Page 2 of 11.
Manoj Kumar said:
5 years ago
@Varshithtunuguntla.
How obtained here 90 and 40. How did the multiplication?
Can you tell me?
How obtained here 90 and 40. How did the multiplication?
Can you tell me?
(3)
Shasi kumar said:
6 years ago
Five years ago, the average age of the Ram family has 5 members including Ram was 29 years. Ram got married 3 years ago and his only child was born 2 years after marriage so that the present average age of family becomes 28 years. Find the age of a bride at the time of marriage?
(2)
Sumit said:
6 years ago
The avg of age of your parents are 35 and avg of age of three of yours is 8 less. What is your age?
Please anyone answer this with explanation.
Please anyone answer this with explanation.
(2)
Ashwin said:
1 decade ago
H+W+C=81 is sum three year ago and W+C=40 five year ago. So five year ago it is wife and child sum is 40. Each year a 1 age will be added for a person. So W+C=44 after two years. (now W+C=44 is three year ago) so H+44 = 81.
H = 37 three year ago. So at present his age is 37+3 = 40 = H.
H = 37 three year ago. So at present his age is 37+3 = 40 = H.
(1)
John Smith said:
1 decade ago
Present age of h+w+c = (27+3)*3 = 90.
Present age of w+c = (20+5)*2 = 50.
h's age = 90-50 = 40.
Present age of w+c = (20+5)*2 = 50.
h's age = 90-50 = 40.
(1)
Harpreet said:
1 decade ago
1. Av age of H+W+C=27.
Three years back their total age, we multiply 27 by 3 = 81 years.
Three years later age increased for three members = 3*3 = 9.
2. Current age of H+W+C = 90.
3. Av age of W+C = 20.
Five years back their total age, we multiply 20 by 2 = 40.
Five years later age increased for two members = 5*2 = 10.
4. Current age of W+C = 50.
5. Husband age = Current age of H+W+C-W+C = 90-50 = 40 years.
Three years back their total age, we multiply 27 by 3 = 81 years.
Three years later age increased for three members = 3*3 = 9.
2. Current age of H+W+C = 90.
3. Av age of W+C = 20.
Five years back their total age, we multiply 20 by 2 = 40.
Five years later age increased for two members = 5*2 = 10.
4. Current age of W+C = 50.
5. Husband age = Current age of H+W+C-W+C = 90-50 = 40 years.
(1)
Karthick said:
9 years ago
Average = sum/no of count.
27 = h + w + c/3.
h + w + c = 81.
20 = w + c - 1/2.
w + c = 41.
h + 41 = 81.
H = 40.
27 = h + w + c/3.
h + w + c = 81.
20 = w + c - 1/2.
w + c = 41.
h + 41 = 81.
H = 40.
(1)
Muskan said:
7 years ago
The average age 3 years ago = x+y+z/3 = 27,
Age of wife and son 5 years ago is x-2+y-2/2 = 20,
Hence x+y = 36.
36+z/3 = 27,
z=45.
Hence present age should be 45+3 which is 48.
Can someone tell me why this is wrong?
Age of wife and son 5 years ago is x-2+y-2/2 = 20,
Hence x+y = 36.
36+z/3 = 27,
z=45.
Hence present age should be 45+3 which is 48.
Can someone tell me why this is wrong?
(1)
Mukul kalsait said:
7 years ago
20+5 =25 today's average of w+child.
H+w+child is 27 +3 = 30 todays all average.
Difference is 5, So 5*2+ new avg30 = 40.
H+w+child is 27 +3 = 30 todays all average.
Difference is 5, So 5*2+ new avg30 = 40.
(1)
Ravikumara. said:
6 years ago
a)=(x+y+z)/3 = 27------> (1) given
=(x+y+z) =3*27=81------> (2) 3years back
=(x+y+z) =81+(3*3) =90------> (3) present age.
B) =(x+y) /2= 20------> (4) given
= (x+y) =2*20=40------> (5) 5years back age
= (x+y) =40+(5*2)=50------> (6) present age of wife and child.
= x+y+z =90
= 50+z=90
=90-50 = 40 = z------> Present husband age (Or)
eq-3 subtracting with 6 => 90-50 = 40 husband's present age.
=(x+y+z) =3*27=81------> (2) 3years back
=(x+y+z) =81+(3*3) =90------> (3) present age.
B) =(x+y) /2= 20------> (4) given
= (x+y) =2*20=40------> (5) 5years back age
= (x+y) =40+(5*2)=50------> (6) present age of wife and child.
= x+y+z =90
= 50+z=90
=90-50 = 40 = z------> Present husband age (Or)
eq-3 subtracting with 6 => 90-50 = 40 husband's present age.
(1)
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