Question

Găsește numerele a,b,c stiind ca sunt invers proportionale cu 4,9,2, iar 2a+c=36

Dau coroana!!!

Answer 1

4a = 9b = 2c = k

a = k/4

b = k/9

c = k/2

2 • k/4 + k/2 = 36

2k/4 + k/2 = 36

2k/4 + 2k/4 = 36

4k/4 = 36

k = 36

a = 36/4 = 9

b = 36/9 = 4

c = 36/2 = 18