Explicație pas cu pas:
inmultim cu 2 primul rand
4 pu.......6ps........72lei
8pu.........6ps.........108lei
_____________________
4pu..........X............ 36lei
1 Cat costa un pachet de unt?
36:4 = 9 lei
2. Cat costa 8 pachete de unt?
9x8=72
3.Cat costa 6 pungi de stafide ?
108-72=36
4.Cat costa 1 punga de stafide.?
36:6=6lei
