Question

Даю 18 баллов за решение: задания 11 на фото

Answer 1

$x + y + z = 288 \ 4y = z \ 5x = y + z$

$z = 5x- y = 4y\ \ 5 x = 5y \ x = y \ x + x + 4x = 288 \ x = frac{288}{6} = 48$

$y = 48 \ z = 4 times 48 = 192$

$192 - 48 = 144$