Question

va rog e urgent dau coroana plus inima

Answer 1

$a). \frac{a}{3} = \frac{b}{22} = k \\ \\ a = 3k \\ b = 22k \\ \\ 3k + 22k = 50 \\ \\ 25k = 50 \\ \\ k = 2 \\ \\ b). \frac{x}{5} = \frac{y}{7} = k \\ \\ x = 5k \\ y = 7k \\ \\ 7k - 5k = 10 \\ k = 5$