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? Select the correct option:
A) 78 kg B) 44 kg C) 62 kg D) 50 kg E) None of these
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= 
<gadget id="calculator">116-72</gadget>
<output>44</output>
44.   Therefore weight of aswanth is 44 kg...   Hence (B) is the correct answer.   Answer : 44 kg
<result>B</result>
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?