Răspuns :
10 kg faina ..........12 kg paine
80 kg faina .........x kg paine
x=80*12/10
x=96 kg
80 kg faina .........x kg paine
x=80*12/10
x=96 kg
Folosim regula de trei simpla:
10kg faina.................12kg paine
80kg faina.................x kg paine
X=(80×12)/10
X=960/10
X=96 kg se paine
10kg faina.................12kg paine
80kg faina.................x kg paine
X=(80×12)/10
X=960/10
X=96 kg se paine