Arun, Akash, Amir and Aswanth go for a picnic. When Arun stands on a weighing machine, Akash also climbs on, and the weight shown was 132 kg. When Akash stands, Amir also climbs on, and the machine shows 130 kg. Similarly the weight of Amir and Aswanth is found as 102 kg and that of Akash and Aswanth is 116 kg. What is Aswanth’s weight?
(a) 58kg
(b) 78 kg
(c) 44 kg
(d) None

• Ans:c
  arun+akash=132-----eq1
  akash+amir=130------eq2
  amir+aswanth=102------eq3
  akash+aswanth=116-------eq4
  solving eq 2 and 4
  we get amir-aswanth=14-------eq5
  
  now solving eq 3 and 5
  we get aswanth=44
• 10 years agoHelpfull: Yes(15) No(0)
• amir+aswanth+akash+aswanth-(akash+amir)=102+116-130 i.e
  2*aswanth=88
  therefore
  aswanth=44
  
  
• 10 years agoHelpfull: Yes(5) No(0)
• The first equation is of no use.
  Ak+Am=130
  Am+As=102
  Ak+As=116
  Adding all we get
  Ak+Am+As=174
  & Ak+Am=130(given)
  So Aswanth=174-130=44kg :)
  Answer--> c) 44kg
  
• 10 years agoHelpfull: Yes(3) No(1)
• 44
  let x,y,z,a here respective weight
  z+a=102....3
  y+z=130.......1
  y+a=116......2
  1-2
  z-a=14....4
  2+4
  2*z=116
  z=58
  a=44
  
  
• 10 years agoHelpfull: Yes(1) No(0)
• (d) none....
  
• 10 years agoHelpfull: Yes(1) No(4)
• ar+ak=132
  ak+am=130
  am+as=102
  ak+as=116
  put value of am from eqn 3 into 2
  ak+102-as=130
  ak=72
  as=44
• 10 years agoHelpfull: Yes(1) No(1)
• a+b=132---i
  b+c=130---ii
  c+d=102---iii
  b+d=116---iv
  
  ii-iv----
  b-d=14---v
  v+ii----
  d=44
  
  
• 9 years agoHelpfull: Yes(1) No(1)
• ans is 44 kg.
  
• 10 years agoHelpfull: Yes(0) No(0)
• (c).44 kg
  explanation:
  let weight of arun,akash,amir and aswanth be a,b,c and respectively.
  a+b=132.......(1)
  b+c=130.......(2)
  c+d=102.......(3)
  b+d=116.......(4)
  evaluating 3 and 4 we get
  2b=144
  b=72
  from (4) we have d=116-72=44.
  therefore weight of aswanth is 44 kg...
• 9 years agoHelpfull: Yes(0) No(0)
• on solving the above four equations
  the weight of Aswanth = 44kg
• 8 years agoHelpfull: Yes(0) No(0)