Question

8 m stofa ......costa 64 lei
3 cm stofa..........costa ?

Answer 1

3cm=300m 300*64 totul supra 8=2400 lei

Answer 2

8m=800cm
800cm......64 lei
3cm.......x lei

$\frac{800}{3}$=$\frac{64}{x}$
800x= 3 × 64
800x=192
     x=$\frac{192}{800}$
     x=0,4 adica 40 bani