Question

Daca intr-o livada s-au plantat 450 de pomi iar in primele 2 zile 340 si in ultimele zile 210 cati pomi s-au plantat a2zi?

Answer 1

a+b+c=450
a+b=340
b+c=210
340+c=450
c=450-340=110
a+210=450
a=450-210
a=240
240+b+110=450
350+b=450
b=450-350
b=100
deci a doua zi sunt 100 pomi

Answer 2

 [tex]Z_1;Z_2\;si\;Z_3\;inseamna\;numarul\;pomilor\;plantati\;pe\;zile...\\ Z_1+Z_2+Z_3=450(pomi\\ daca\;Z_1+Z_2=340(pomi)\;\;atunci\,,\;Z_3=450-340=110(pomi)\;;\\ daca\;Z_1+Z_3=210(pomi)\;\;atunci\,,\;Z_1=450-210=240(pomi)\;;\\ \Rightarrow\;\;Z_2=450-(110+240)=450-350=100(pomi)[/tex]





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