Latest TCS Aptitude Question SOLUTION: 10 years ago 10 people age was33. After 3 years a person of age 40 dies. After another 3 years anothe person of 40years dies.After another 3 years another person of 27years dies. F

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(#M40011522) TCS Logical Reasoning question Keep an EYE

10 years ago 10 people age was33. After 3 years a person of age 40 dies. After another 3 years anothe person of 40years dies.After another 3 years another person of 27years dies. Find the present average age?

Asked In TCS Sonali (11 years ago)

Unsolved Read Solution (13)

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Read Solution (13) :

sathyapriya  (11 years ago)

10 year ago 10 people= 33
10 year ago total age=330
after 3 year 1 person with age 40 died = ie take his age as 37 before 3 years
lly for next 2 persons ; consider as 34 (40-6) and as 18(27-9) in 6 and 9 years ago( ie 37+34+18=89) 10 years ago age of 7 people =330-89=241
nw consider present age 7*10=70+241=311
nw avg= 311/7=44.43(ans)

Is this solution Helpfull? Yes (52) | No (3)  

Rakesh Kumar  (11 years ago)

Sum of present age of 10 people = 330+100=430
After 3 years, Sum of ages of 9 people =(430+30)-40=420
After 3 years , sum of ages of 8 people=(420+27)-40=407
After 3 years,sum of ages of 7 people=(407+24)-27=404

Now,the average age =404/7=57.71

Is this solution Helpfull? Yes (34) | No (22)  

ch.vamsikrishna  (8 years ago)

10 year ago 10 people= 33
10 year ago total age=330
after 3 year 1 person with age 40 died = ie take his age as 37 before 3 years
lly for next 2 persons ; consider as 34 (40-6) and as 21(30-9) in 6 and 9 years ago( ie 37+34+21=92) 10 years ago age of 7 people =330-92=238
nw consider present age 7*10=70+238=308
nw avg= 308/7=44

Is this solution Helpfull? Yes (6) | No   

Sanket  (8 years ago)

10 people sum -100=330 before 10 years
10 people sum present=330+100=430
present average=430/10=43 & question gives redundant data that is after 3 & all to fool us & ask present age so plz read it carefullly.

Is this solution Helpfull? Yes (5) | No (2)  

mahesh  (7 years ago)

Ans is 44 bcoz
the initial sum of ages is 330
after 3 years it is 330+(10*3)=360
but one person of age 40 has died so subtract 40
360-40=320(now only 9 persons are alive)
again after three years sum is 320+(9*3)=347
subtract 40 bcoz one person has died
347-40=307(8 persons alive)
again after three years sum is 307+(8*3)=331
subtract 30 bcoz one person has died
331-30=301(7 alive)
for present age 10 years required already 9 years completed
so for 1 year 301+(7*1)=308
finally take Avg 308/7=44

Is this solution Helpfull? Yes (5) | No   

dhirendra sisodiya  (11 years ago)

ans. shuld be 44.43

Is this solution Helpfull? Yes (4) | No (4)  

SAKTHI SARAVANAN.V  (11 years ago)

ans=43
10 yrs ago 10 ppl were 330,
so after 10 yrs sum of ages wil be 330+(10*10)=430
present avg =430/10 =43

Is this solution Helpfull? Yes (2) | No (13)  

Alpha  (11 years ago)

i think it is 44.43

Is this solution Helpfull? Yes (2) | No (5)  

vikas kumar  (8 years ago)

ans:-
ten years ago avg. age was 33
Age of person who died after 3 years= 37(i.e. 40-3)
Age of person who died after another 3 years=34(I.e. 40-6)
Now average 10 people age of ten years ago was 33.
Total of their age =10*33= 330
Age excluding two persons who died
= 330-34-37
=259
New average age of 8 people is
=(259+10*8)/8
=42.375 Years.

Is this solution Helpfull? Yes (1) | No   

shambhu  (8 years ago)

10 yrs ago, sum of age of 10 people=330
After 3 yrs ,sum= 330+ (9*3) -40=317
After another 3 yrs, sum=317+(8*3)-40=301
After another 3 yrs, sum=301 +(7*3)-27=295
(Total 9 yrs passed)
So,present age i.e., after 1 yr ,sum=295+(7*1)=302
So, present avg age= 302/7(since only 7 people from 10 are left after 3 died)=43.1

Is this solution Helpfull? Yes (1) | No (1)  

Anibrata Hari  (9 years ago)

311/7 shud b the correct answr..

Is this solution Helpfull? Yes | No (3)  

anamika  (8 years ago)

avg age of 10 people=33
sum of ages of 10 people 10 years ago=330
for finding out the present sum of ages=(10*10)+330=430 years
Now,after 3 years
sum of ages=430+(3*10)=460
but one person dies,
therefore,sum =460-40=420years
Again after 3 years,
sum=420+(3*9)=447 (since one person is died therefore 9 people remaining)
again one person dies
now sum=447-40=407 years
Again after 3 years,
sum=407+(3*8) (since 2 members died)
but again one person dies and hence
final sum=431-27=404 years
therefore,
average age=404/7=57.71

Is this solution Helpfull? Yes | No (2)  

ajith kumar  (7 years ago)

the ans is 44 ,I think so......

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