Question

Imparte nr. 480 in parti direct proportionale cu 3,8 si 5

Answer 1

a+b+c=480

a/3=b/8=c/5 direct proportionale

b=8a/3, c=5a/3 inlocuim b si c

a+8a/3+5a/3=480 numitor comun 3

3a+8a+5a=1440

16a=1440, a=1440/16=90

b=8x90/3=8x30=240

c=5x90/3=5x30=150