Question

Suma a trei numere este 1. stiind ca ele sunt direct proportionale cu 0,1; 2/5; 1/3, aflati numerele

Answer 1

Răspuns:

10a = 5b/2 = 3c = k

a = k/10

b = 2k/5

c = k/3

k/10 + 2k/5 + k/3 = 1

3k + 12k + 10k = 30

25k = 30

k = 30/25 = 6/5

a = 6/5 • 1/10 = 6/50 = 3/25

b = 2/5 • 6/5 = 12/25

c = 6/5 • 1/3 = 6/15 = 2/5