a)
[tex] \frac{1}{2} \times 3500 = 1750 \: lei[/tex]
[tex] \frac{1}{2} \times 6400 = 3200 \: kg[/tex]
[tex] \frac{1}{2} \times 550 = 275 \: m[/tex]
b)
[tex] \frac{1}{3} \times 1260 = 420 \: km[/tex]
[tex] \frac{1}{3} \times 642 = 214 \: kg[/tex]
[tex] \frac{1}{3} \times 15600 = 5200 \: lei[/tex]
c)
[tex] \frac{1}{4} \times 4800 = 1200 \: kg[/tex]
[tex] \frac{1}{4} \times 32400 = 8100 \: lei[/tex]
[tex] \frac{1}{4} \times 640 = 160 \: km[/tex]
