Question

Cele 1600 kg mere culese dintro livada au fost puse in 150 ladite de 10 kg si 12 kd. cate ladite de fiecare fel au fost folosite

Answer 1

a+b=150=>a=150-b
10a+12b=1600
10(150-b)+12b=1600
1500-10b+12b=1600
2b=1600-1500
b=100:2
b=50 ladite de 12 kg
a=150-50=100 ladite de 10 kg

Answer 2

n= ladite de 10 kg
m = ladite de 12 kg
n+m =150     n=150-m
10n +12m =1600   => 10(150-m) +12m =1600
1500 -10m +12m =1600
2m =100
m=50 
n=150 - 50 =100