Question

d) 0,5 : 0,8 = 0,4x : 0,2​

Answer 1

$0.5 \div 0.8 = 0.4x \div 0.2 \\ \frac{5}{8} = \frac{4x}{2} \\ \frac{5}{8} = 2x \\ 5 = 16x \\ x = \frac{16}{5} \\ x = 3 \frac{1}{5} \\ x = 3.2$