Latest TCS Aptitude Question SOLUTION: ab+a+b=135 bc+b+c=322 ca+c+a=151 then a+b+c=?

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(#M40023728) TCS Numerical Ability question a+b+c=? Keep an EYE

ab+a+b=135
bc+b+c=322
ca+c+a=151
then a+b+c=?

Asked In TCS m s aditya (10 years ago)

Solved abhik k. dey Read Solution (8)

Is this Puzzle helpful?   (71)   (21) Submit Your Solution Arithmetic

Read Solution (8) :

abhik k. dey  (10 years ago)

a+b+ab=135 or,a=(135-b)/(1+b)

a+c+ac=151 or, c=(151-a)/(1+a)
now replacing a=(135-b)/(1+b)
we get c=(2+19b)/17

b+c+bc=322 or,c=(322-b)/(1+b)

so we can write ((322-b)/(1+b))=((2+19b)/17 or,b^2+2b-288=0 or,b=either -18 or 16

now if b=-18 then a=9 & c=20;
if b=16 then a=7 & c=18

Is this solution Helpfull? Yes (20) | No (17)  

ankita  (10 years ago)

a=7,b=16,c=18......so a+b+c=41

Is this solution Helpfull? Yes (9) | No (20)  

Pooja Udayan  (10 years ago)

@ ankita please explain hoe you got the values of a, b, c?

Is this solution Helpfull? Yes (5) | No (6)  

priya  (10 years ago)

Ankita can u pls explain

Is this solution Helpfull? Yes (4) | No (3)  

shyamalabharathi  (10 years ago)

post the options tooo

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

ANKITA SURANI  (10 years ago)

if we take a=7 & b=16 then
7*16+7+16=135
now c=18 so
16*18+16+18=322
18*7+18+7=151

so a+b+c=7+16+18=41

Is this solution Helpfull? Yes (1) | No (18)  

varsha chaudhary  (6 years ago)

2(ab+bc+ca)+2(a+b+c)=766
2(250-a-b+300-b-c+216-a-c)+2(a+b+c)=766
1532-(a+b+c)=766
2(a+b+c)=766
a+b+c=383

Is this solution Helpfull? Yes (1) | No (8)  

srilekha  (10 years ago)

a+b+c=307

Is this solution Helpfull? Yes | No (9)  

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