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1. ana observa ca in 7 sticle cu suc se afla cu 3 l mai mult decat in 5 sticle.
ce capacitate are sticla?
2.intr-o sticluta erau 20cl de sirop.Un copil ia de 3 oei pe zi cate 5ml de sirop.CE cantitate de sirop ramane in sticluta dupa o saptamana?

Răspuns :

Ctinamaria31xxx
7s=5s+3l
7s-5s=3l
2s=3l
s=3l/2
s=1,5 litri

s- sticla
=====================
o sapt=7 zile

3x7= ia de 21 de ori

20 cl=200ml

21x5=105 ml a luat intr-o saptamana

200-105=95 ml ramasi
Buni
Problema 1
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Diferenta = 2 parti (sticle)= 3l
1 sticle =3:2=1,5l

Problema 2
20cl=200ml
3x5=15ml/zi
15x7=105ml / saptamana
200-105=95 ml

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