Question

8 baieti si 6 fete au cules intr-o zi 156 kg de coacaza. a doua zi 5 baieti si 12 fete au cules180 kg de coacaza. Cite kg de coacaza a cules pe zi un baiat si cite kg de coacaza a cules o fata?

Answer 1

8 baieti....6 fete.....156kg coacaze
5 baieti...12 fete.....180 kg coacaze
egalam nr de fete  prin amplificare(x2) si avem:

16 baieti....12 fete.....312 kg coacaze
5 baieti....12 fete........180 kg coacaze

16-5=11 baieti
312-180= 132 kg coacaze
132:11=12 kg coacaze de baiat

16baieti x12 kg......12 fete......312 kg coascaze
  12 fete=312-(16x12)
  12 fete= 312-192
            =120
      201:12 fete=10 kg coacaze /fata