Răspuns :
20 : 2,5 = 8 sticle
Sau ... stim ca 2,5 litri are o sticla
deci 10 litri vor avea 4 sticle => 20 de litri vor incapea in 8 sticle
Sau ... stim ca 2,5 litri are o sticla
deci 10 litri vor avea 4 sticle => 20 de litri vor incapea in 8 sticle