Question

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

Answer 1

a+b=95
12a+7b=940
a=95-b
12(95-b)+7b=940
1140-12b+7b=940
200=5b
b=40 sunt ladite
a+40=95
a=95-40
a=55 sunt lazi

Answer 2

notam lazi=L
          ladite=l
L+l=95⇒L=95-l
12L+7l=940
12(95-l)+7l=940
1140-12l+7l=940
1140-5l=940
5l=200|:5
l=40