Question

甲、乙两袋大米重34.3千克,乙、丙两袋大米重39.3千克,甲、丙两袋大米重36.4千克,甲、乙、丙三袋大米各重

Answer 1

设：甲x kg,乙y kg,丙z kg.

x+y=34.3(1)

y+z=39.3(2)

x+z=36.4(3)

(1)+(2)+(3):

2x+2y+2z=110

x+y+z=55(4)

(4)-(2):x=20.7

(4)-(3):y=15.7

(4)-(1):z=18.6