The average weight of X, Y, and Z is 45 kg. If the average weight of X and Y be 40 kg and that of Y and Z be 43 kg, then the weight of Y is:
A. 31 kg
B. 26 kg
C. 59 kg
D. 46 kg
Answer:A
The average weight of X, Y, and Z is 45 kg. If the average weight of X and Y be 40 kg and that of Y and Z be 43 kg, then the weight of Y is:
A. 31 kg B. 26 kg C. 59 kg D. 46 kg