Question

a) x% de 400 =120

b) x% de 200= 160

Answer 1

Respuesta:

$\frac{x}{100} \times 400 = 120 \\ 4x = 120 \\ x = 30 \\ \\ \frac{x}{100} \times 200 = 160 \\ 2x = 160 \\ x = 80$