Question

daca 8 carti costa 250 lei atunci 3 carti costa?

Answer 1

250:8=31,25
31,25×3=93,75

Answer 2

$8 \: carti.......250 \: lei \\ 3 \: carti.......x \\ \\ x = \frac{250 \times 3}{8} = \frac{750}{8} = 93.75 \: lei \\ \\ sau \\ 250 \div 8 = 31.25 = lei \: o \: carte \\ 3 \times 31.25 = 93.75 \: lei$