Question

ayudaa!! porfavor :'(​

Answer 1

Explicación paso a paso:

$\frac{A}{B} = \frac{m}{40} = \frac{9}{n} = \frac{3}{8} = k$

$\frac{9}{n} = \frac{3}{8} \\ 9(8) = 3n \\ 72 = 3n \\ n = \frac{72}{3 } \\ \boxed{ n = 24}$

$\frac{m}{40} = \frac{3}{8} \\ 8m = 40(3) \\ 8m = 120 \\ m = \frac{120}{8} \\ \boxed{ m = 15}$

$m + n = 15 + 24 \\ \boxed{m + n = 39}$