Question

Mara cumpara 5 globulete galbene si 8 globulete rosii platind 60 lei. Daca ar fi cumparat 5 globulete galbene si 6 globulete rosii , ar fi patit 50 lei. Cat a costat un globulet galben?Dar unul rosu?

Answer 1

Cat costa un globulet rosu? (60-50):2=5 Cat costa 8 globulete rosii? 5x8=40 Cat costa 5 globulete galbene? 60-40=20 Cat costa un globulet galben? 20:5=4

Answer 2

5g....8r=60 -
5g.....6r=50
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/        2r=10 =>r=10:2=>r=5 globulete rosii
5g+8x5=60
5g+40=60
5g=60-40
g=20:5=>g=4 globulte galbene