Question

aflati nr abc daca a/3=b/4=c/8 si 2a+3b+c=520

Answer 1

a / 3 = b / 4 = c / 8 = K
a / 3 = K => a = 3 K
b / 4 = K => b = 4 K
c / 8 = K => c = 8 K

2 x 3 K + 3 x 4 K + 8 K = 520
6 K + 12 K + 8 K = 520
18 K + 8 K = 520
26 K = 520
K = 520 : 26
K = 20

a = 20 x 3 = 60
b = 20 x 4 = 80
c = 20 x 8 = 160