Question

Intr-un bloc sunt in total 60 apartamente de 2 si 4 camere . Aflati cate apartamente de fiecare fel sunt , daca blocul are 190 de camere .

Answer 1

a+b=60=>a=60-b
2a+4b=190
2(60-b)+4b=190
120-2b+4b=190
2b=70
b=35(4 camere)
a=25(2 camere)

Answer 2

∅ Rezolvare :


60 • 4 = 240 ( camere )
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240 - 190 = 50 ( camere )
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50 : 2 = 25 ( ap. cu 2 camere )
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190 - 50 = 140 ( camere )
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140 : 4 = 35 ( ap. cu 4 camere )

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