A,B,C and D go for a picnic. When A stands on a weighing machine, B also climbs on, and the weight shown was 132kg.when B stands, C also climbs on , and the machine shows 130kg.
similarly the weight of C and D is found as 102kg and that of B and D is 116kg. what is D's weight?
a)58kg
b)78kg
c)44kg
d) can not be determined from the given information

• A + B = 132 ---------- eqn. 1
  B + C = 130 ---------- eqn. 2
  C + D = 102 ---------- eqn. 3
  B + D = 116 ---------- eqn. 4
  By solving eqn. 2 and 3 we get,
  B – D = 28 ---------- eqn. 5
  Now solve eqn. 4 and 5,
  2D = 88
  D = 44
  
• 11 years agoHelpfull: Yes(24) No(0)
• b+d=116;
  c+d=102;
  on solving these 2 eqns weget b=72
  on putting thiin the 1st eqn e get d=44
• 11 years agoHelpfull: Yes(3) No(2)
• ans:44...........
  
• 11 years agoHelpfull: Yes(2) No(0)
• ans=44.....
• 4 years agoHelpfull: Yes(0) No(0)