Aptitude - Problems on Ages - Discussion
Discussion Forum : Problems on Ages - General Questions (Q.No. 4)
4.
A is two years older than B who is twice as old as C. If the total of the ages of A, B and C be 27, then how old is B?
Answer: Option
Explanation:
Let C's age be x years. Then, B's age = 2x years. A's age = (2x + 2) years.
(2x + 2) + 2x + x = 27
5x = 25
x = 5.
Hence, B's age = 2x = 10 years.
Discussion:
79 comments Page 3 of 8.
Suresh said:
2 decades ago
Mr Dharumaraj shall you please explain ur answer?
(1)
Snehal said:
8 years ago
Please, explain in detail how it comes 5x+2=27?
NARESH said:
1 decade ago
Hi dude............
females(Y)=6000,males(X)=18000
x+y=24000........................(1)
(106/100)x+(109/100)y=25620.......(2)
by solving this 2 u get before increasing values..........
after increasing total number of females are (109/100)*6000=6540
after increasing total number of males are (106/100)*18000=19080
total is 25620
Hence proved(any doubts?)
females(Y)=6000,males(X)=18000
x+y=24000........................(1)
(106/100)x+(109/100)y=25620.......(2)
by solving this 2 u get before increasing values..........
after increasing total number of females are (109/100)*6000=6540
after increasing total number of males are (106/100)*18000=19080
total is 25620
Hence proved(any doubts?)
Nagendra said:
1 decade ago
The population of town was 24000. If males increases by 6% and females by9%, it becomes 25620. Number of males and females are?- Please any one explain me...
Arokiaraj said:
1 decade ago
c=x
b=2x
a=2x+2
(2x+2)+2x+x=27
5x=25
x=25/5
x=5
b=2x
b=2*5=10
b=2x
a=2x+2
(2x+2)+2x+x=27
5x=25
x=25/5
x=5
b=2x
b=2*5=10
Sreeja said:
8 years ago
If we take b as x then 9 is correct ans.
2+x+x+x-2 = 27,
X = 9.
2+x+x+x-2 = 27,
X = 9.
Pranav said:
8 years ago
The right answer is 7.
Rebekah said:
8 years ago
Can anyone explain 5x = 25?
Srini said:
1 decade ago
Can you give me short cut to solve this?
P.GANGADHAR said:
8 years ago
A is x.
B is x-2.
C is (x-2)/2.
The sum of all ages is 27.
x+ (x-2)+ (x-2)/2 = 27.
(x-2+2x-4+2x) / 2 = 27.
Then (x+2x-6+2x) = 54.
(5x-6) =54.
5x =60.
x= 12 then.
(A is 12).
B is (x- 2 = 12-2= 10).
B age is 10.
B is x-2.
C is (x-2)/2.
The sum of all ages is 27.
x+ (x-2)+ (x-2)/2 = 27.
(x-2+2x-4+2x) / 2 = 27.
Then (x+2x-6+2x) = 54.
(5x-6) =54.
5x =60.
x= 12 then.
(A is 12).
B is (x- 2 = 12-2= 10).
B age is 10.
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