Răspuns :
1.cate masinute s-au asezat in primele trei cutii
100+100+100=400
2. Cate masinute s-au asezat in a patra cutie
430-400=30 masinute
100+100+100=400
2. Cate masinute s-au asezat in a patra cutie
430-400=30 masinute
430 masinute
Daca asaza cate 100 masinute in primele 3 cutii, inseamna ca in a patra cutie asaza diferenta masinutelor.
430 - ( 3 x 100)= 430 - 300 = 130 masinute asaza in a patra cutie
Verific: 3 x 100 + 130 = 300 + 130 = 430 masinute asaza in cele 4 cutii
Daca asaza cate 100 masinute in primele 3 cutii, inseamna ca in a patra cutie asaza diferenta masinutelor.
430 - ( 3 x 100)= 430 - 300 = 130 masinute asaza in a patra cutie
Verific: 3 x 100 + 130 = 300 + 130 = 430 masinute asaza in cele 4 cutii