IBM
Company
Numerical Ability
Age Problem
A mans age is 125% of what it was 10 years ago, but 83 1/3 % of what it will be after ten 10 years. What is his present age?
A. 70
B. 60
C. 50
D. 40
Read Solution (Total 14)
-
- 175-94=81
188-124=64
372-323=49
1292-?=36 - 10 years agoHelpfull: Yes(32) No(1)
- 175-94=81=9^2
188-124=64=8^2
372-323=49=7^2
1292-1256=36=6^2
Ans=1256.
- 10 years agoHelpfull: Yes(13) No(1)
- ans is op c. 50
let the age be x. so
(x-10)*(125/100) = (x-10)*(250/300) [solve 83 1/3% = 250/300]
x= 50. - 9 years agoHelpfull: Yes(9) No(0)
- Let the age before 10 years = x
Then 125x/100 = x + 10
=>125x = 100x + 1000
=> x = 1000/25 = 40
Present age = x + 10 = 40 +10 = 50 - 9 years agoHelpfull: Yes(8) No(0)
- 94*2=188
124*3=372
323*4=1292
similarly - 10 years agoHelpfull: Yes(4) No(5)
- Let present age be x
x = 125% of (x-10)
x = 83 1/3 % of (x+10)
=> x = 50
C. 50 - 9 years agoHelpfull: Yes(4) No(2)
- 175-9^2=94*2=188
188-8^2=124*3=372
372-7^2=323*4=1292
1292-6^2=1256*5=6280 - 10 years agoHelpfull: Yes(3) No(3)
- 1.) 175-94=81 (9^2) follow this pattern now
94*2=188
2.) 188-124=64 (8^2)
124*3=372
3.) 372-323=49 (7^2)
323*4=1292
4.) here.. wat must be substracted frm 1292 to get the next number in the series. look at the pattern
1292- 36 (6^2)=1256
1256 is the next number - 10 years agoHelpfull: Yes(3) No(3)
- 1292 and 6280 will be the next two terms
because 175-81=94
then 94*2=188
again 188-64=124
then 124*3=372
again 372-49=323
then 323*3=1292 - 10 years agoHelpfull: Yes(1) No(2)
- see this for this answer
http://www.careerbless.com/aptitude/qa/ages1.php - 9 years agoHelpfull: Yes(1) No(0)
- let present age=x
10yrs ago age is 125% of (x-10)
after 10yrs age is 83 1/3(250/3%) of (x+10)
125/100(x-10)=250/300(x+10)
5/4[(x-10)]=/6[(x+10)]
6x-60=4x+40
2x=100
x=50 - 9 years agoHelpfull: Yes(1) No(0)
- C. ans 50
...
- 9 years agoHelpfull: Yes(0) No(0)
- ans is 50
125% (x-10)=83 1/3% (x+10) - 9 years agoHelpfull: Yes(0) No(0)
- (125/100)*(x-10)=((250/3)/100)*(x+10)
250/3 means=83 1/3
x=50
- 8 years agoHelpfull: Yes(0) No(0)
IBM Other Question
A man is 24 years older than his son. In two years, his age will be twice the age of his son. What is the present age of his son?
A. 23 years
B. 22 years
C. 21 years
D. 20 years
1) 8,16,3,27,4,8,7,19,2,0,7, ?
2) 0.5,2,3,4.5,6.75, ?
3) 1/3, 1/2, 1/4, 2 1/3, 3 1/2, 4 1/4, 4 1/3, 6 1/2,?
4) 4.2,26.0,8.9,8.4,52.0,17.8,16.8,104,?
5) 33,8,41,46,21,67,72,47,119,124, ?
6) 6,18,21,8,11,33,2,6,9,5,8,24,7,21
7) 1370,1320,1070,-180, ?
8) 24, 42, 1/2,2,65,56,6/5,5/6,73,37, ?
9)4,2,5,9,11,13,7,16,17,9, ?
10)56,89,33,21,57,88,35,19,60,85,39,15,?