Question

2)5:y = 4:9 4)х:10= 5:9

Answer 1

$5:y=4:9\quad \Rightarrow \quad \frac{5}{y}=\frac{4}{9}\quad \Rightarrow \quad y= \frac{5\cdot 9}{4}= \frac{45}{4}=11,25\\\\x:10=5:9\quad \Rightarrow \quad \frac{x}{10}=\frac{5}{9}\quad \Rightarrow \quad x=\frac{10\cdot 5}{9}= \frac{50}{9}=5 \frac{5}{9}$