Question

aflati numerele a b si c stiind ca sunt direct proportionale cu numerele 3 , 7 si 10 iar a + b + c = 100 VA ROG

Answer 1

$\frac{a}{3}$=$\frac{b}{7}$=$\frac{c}{10}$=k =>

a=3k

b=7k

c=10k

a+b+c=100

3k+7k+10k=100

20k=100

k=5

a=3k =>

a=15

b=7k =>

b=35

c=10k =>

c=50