Aptitude - Problems on Ages - Discussion
Discussion Forum : Problems on Ages - General Questions (Q.No. 11)
11.
The present ages of three persons in proportions 4 : 7 : 9. Eight years ago, the sum of their ages was 56. Find their present ages (in years).
Answer: Option
Explanation:
Let their present ages be 4x, 7x and 9x years respectively.
Then, (4x - 8) + (7x - 8) + (9x - 8) = 56
20x = 80
x = 4.
Their present ages are 4x = 16 years, 7x = 28 years and 9x = 36 years respectively.
Discussion:
43 comments Page 4 of 5.
Chenchu said:
1 decade ago
Can't understand habib's method of subracting 8 from b.
Swetha said:
1 decade ago
Habib method is good:-).
Sumit said:
1 decade ago
@Habib method is good.
Pragathi said:
1 decade ago
Actually ago means past time so we have to add it's my doubt some times you will add some times you subtract please clarify it.
Ganesh said:
1 decade ago
Nice and easy method.
Payal said:
1 decade ago
Habib method was good
Shiva said:
1 decade ago
Shiva
(4x-8)+(7x-8)+(9x-8)= 56
Remove the braces.
4x-8+7x-8+9x-8 =56
Now seperate variables and numeric terms.
4x+7x+9x=56+8+8+8
20x=80
x=4.
njoy.
(4x-8)+(7x-8)+(9x-8)= 56
Remove the braces.
4x-8+7x-8+9x-8 =56
Now seperate variables and numeric terms.
4x+7x+9x=56+8+8+8
20x=80
x=4.
njoy.
Rahima said:
1 decade ago
Just add all the x terms and numerical terms seperately.
JAGADEESH said:
2 decades ago
4x+7x+9x=80
20x=80
x=4
then we get answer
20x=80
x=4
then we get answer
Habib said:
2 decades ago
For such ques......jst simply look at the options !!!!
Try subtracting 8 frm B...and den add u get 56 !!!!
Hit and Trial...saves time !!!! :)
Try subtracting 8 frm B...and den add u get 56 !!!!
Hit and Trial...saves time !!!! :)
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers