Răspuns:
R: x=196 l, y=4116 l
Explicație pas cu pas:
a) Cati litri de motorina intra intr-o cisterna, daca in 20 de cisterne intra 3920 litri? Dar in 21 de cisterne cati litri de motorina vor intra?
1 cisterna......... X l
20 cisterne....... 3920 l
X=3920/20=196 l
1 cisterna.......... 196 l
21 cisterne......... Y l
Y=21*196=4116 l
R: x=196 l, y=4116 l
b) Cate cani incap intr-o cutie, daca in 30 de cutii incap 3600 cani? Dar in 7 cutii, cate cani incap?
1 cutie .......... X cani
30 cutii ........... 3600 cani
X=3600/30=120 (cani)
1 cutie .......... 120 cani
7 cutii ............ Y cani
Y=7*120=840 (cani)
R: X=120 (cani) , Y=840 (cani)
