Răspuns:
Explicație pas cu pas:
9) pasari=500
gaini=240
rate=240-108=132
...................................................................500
......................240g...........132 r......x.gaste..........
gaste=500-240-132=128
10)
x+ 513 = 803 x=803-513=290
x-417 = 396 x=417+396=813
984 - x= 196. x=984-196=788