Question

O pensiune are 10 camere.In fiecare camera se afla cate un corp de iluminat cu cate 3 becuri si 2 veioce cu cate un bec.Cate becuri sunt in cele 10 camere?

Answer 1

10× (1×3 + 2×1)=
10×(3+2)=
10×5=
50 (becuri sunt in cele 10 camere)

Answer 2

1 camera are un corp de iluminat=3 becuri si 2 veioze(1 veioza=1 bec)=2 becuri =3 becuri +2 becuri=5 becuri intr.o camera
10 camere× 5 becuri=50 becuri