Question

10 caiet. ..........20 lei
5 caiete ..........x lei


regula de 3 simpla va rog ​

Answer 1

10 lei 5 caiete ca e 5x20 supra 5

Answer 2

$x = \frac{10 \times 5}{20}$

$x = \frac{50}{20}$

$x = 50 \div 20$

$x = 2.5$