Stefania are 2 kg de zahar. Pune in 4 pungi cate 200 de grame iar restul il ambaleaza in 100 de pungute. Cate grame are o punguta ?
2 kg = 2000 grame
Cate grame are o punguta ?
(2000 g - 4 x 200 g) : 100 = (2000 - 800) : 100 = 1200 : 100 = 12 gr/ punguta