Question

A razão entre duas distancias e 2/5 qual o valor da menor se a maior mede 10 m

Answer 1

x   =  2
y     5

y = 10

 x  = 2
10    5

5x = 20

x = 4

Answer 2

$Seja\ x\ a\ menor\ dist\^ancia\\\\\dfrac{2}{5}\ =\ \dfrac{x}{10}\\\\Multiplicando\ em\ diagonal\\\\5x=2\cdot10\\\\5x=20\\\\\boxed{x=4\ m}$