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:
101 comments Page 7 of 11.
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)
Kanchan shah said:
7 years ago
27*3=81,
81+9=90,
5year ago =formula( average age*2),
So, 20*2=40,
40+10=50.
Husband age 90 - 50 = 40.
81+9=90,
5year ago =formula( average age*2),
So, 20*2=40,
40+10=50.
Husband age 90 - 50 = 40.
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)
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)
Mahesh said:
1 decade ago
h+w+c/3 = 27.
h+w+c = 81.
w+c/2 = 20.
w+c = 40.
h+w+c = 81.
h+40 = 81.
h = 81-40.
h = 40.
h+w+c = 81.
w+c/2 = 20.
w+c = 40.
h+w+c = 81.
h+40 = 81.
h = 81-40.
h = 40.
Gopalkrishna said:
1 decade ago
Present age:
H+W+C=30*3.
W+C=25*2.
....................
ie...,H=40 year.
H+W+C=30*3.
W+C=25*2.
....................
ie...,H=40 year.
Guhan said:
9 years ago
Ramya it is very easy to understand. Keep solving the problem in the easiest way.
Mayuri khode said:
5 years ago
@Bharani.
Instead of addition W+C you can replace it by H+C.
i.e (H+W+C)-(H+C).
Instead of addition W+C you can replace it by H+C.
i.e (H+W+C)-(H+C).
Priya said:
1 decade ago
((h-3)+(w-3)+(c-3))/3=27
h+w+c=90.
how to 90 comes ? I don't understand.
h+w+c=90.
how to 90 comes ? I don't understand.
Yasir Aziz said:
8 years ago
@Naseem.
You gave the easy and best solution for this question. Thanks.
You gave the easy and best solution for this question. Thanks.
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