Question

nr 3 ,x ,5 , sunt direct proportionale cu y, 54, 45. Calculati x+y si y -x

Answer 1

{3;x;5} dp{y;54;45}
$\frac{3}{y} = \frac{x}{54} = \frac{5}{45}$
$\frac{3}{y} = \frac{5}{45}$
y=27
$\frac{x}{54} = \frac{5}{45}$
x=6
x+y=27+6=33
y-x=27-6=21