Question 5Two positive numbers $x$ and $y$ are in the ratio $a:b,$ where $0\lt a\lt b.$ If $x+y=c,$ then the smaller of $x$ and $y$ is$\frac{ac}{b}$$\frac{bc-ac}{b}$$\frac{ac}{a+b}$$\frac{bc}{a+b}$$\frac{ac}{b-a}$