Latest Capgemini Aptitude Question SOLUTION: if x-y + z = 19 , y + z =20 , x-z=3 , find d value of x+4y-5z a)22 b)38 c)17 d) none

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(#M40065426) CAPGEMINI Numerical Ability question Keep an EYE

if x-y + z = 19 , y + z =20 , x-z=3 , find d value of x+4y-5z
a)22 b)38 c)17 d) none

Asked In Capgemini priya (9 years ago)

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Mani kandan  (9 years ago)

ans is option D) none

x-y+z=19---------(1)
y+z=20
thus y=20-z---------(2)
x-z=3
thus x =3+z---------(3)
substitute x and y in equation (1)
you will get,
(3+z) - (20-z) + z = 19
3z = 36
z = 12
substitute z in (2) and (3)
thus x = 15
and y = 8
substitute value of x,y,z in x+4y-5z
answer is - 13

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kranti  (9 years ago)

option d

x-z=3 (given)
x=3+z..(1)
sub in x in this
in x-y+z=19..(given)
z+3-y+z=19
-y+2z=16...(2)
y+z=20..(given)
z=12;
then x=15,y=8

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raghavendra  (9 years ago)

d)
y=8,x=15,z=12

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Sougata Sarkar  (9 years ago)

d) none
Exp : By solving 3 equation we get
x = 17, y = 6, z= 14.
So x+4y-5z = -29

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pratyusha  (9 years ago)

31 is the answer...

let y be the total no. of loaves
a be the remaining loaves after 1st thief
b be the remaining loaves after 2nd thief
.
.
e = 0 be the remaining loaves after 5th thief

solution:
a = y - 0.5y - 0.5
= 0.5y - 0.5
b = a - 0.5a - 0.5
= 0.5a - 0.5
c = 0.5b - 0.5
d = 0.5c - 0.5
e = 0.5d - 0.5 but e = 0,
thus,
d = 1
c = 3
b = 7
a = 15
y = 31 -> answer

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reddy kumar  (9 years ago)

op:D
y=8,x=15,z=12

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Nikhil  (8 years ago)

ans is option D is correct
x-y+z=19......(1)

y+z=20.........(2)

x-z=3............(3)

from eq (3)
x=3+z.....(4)
from eq(2)
y=20-z....(5)

put the value of eq(4) AND eq(5) in eq(1)
we get z=12
similarly we get x=15 and y=18

we get in putting in eq x+4y-5z
we get result -13

S0,option D is correct....

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akshay kumar gupta  (8 years ago)

option (D) is correct ans .
bcoz i found x=15,y=8,z=12
and then put x+4y5z= 15+32-60= -13

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