Question

Cantitatea de 940kg de struguri se pun in ladite si lazi , in total 95 de bucati.Stiind ca in orice ladita s-au pus 7kg si in orice lada sau pus 12kg calculati , cate ladite au fost

Answer 1

x=lazi
y=ladite
x+y=95 ⇒ x=95-y
12x+7y=940
12(95-y)+7y=940
1140-12y+7y=940
5y=200
y=200:5=40 ladite
95-40=55 lazi

Answer 2

x ladite
y lazi

x+y=95
7x+12y=940

y=95-x
7x+12(95--x)=940
7x+1140-12x=940
1140-5x=940
5x=1140-940
5x=200
x=40 ladite
y=95-40
y=55 lazi