Question

6.Ştiind că a/3=b/5=c/7 iar suma numerelor a , b şi c este 75 aflaţi numerele.
va rog dau coroana

Answer 1

$\frac{a}{3} = \frac{b}{5} = \frac{c}{7} = k \implies\\\\ a=3k\\b=4k\\c=7k$

$a+b+c=75\\3k+5k+7k=75\\15k=75\\k=5$

$a=3k=3*5=15\\b=5k=5*5=25\\c=7k=7*5=35$