Răspuns :
Explicație pas cu pas:
a+b+c=750
a/7=b/8=k ==> a=7k
b=8k
b×5=c×4=m
m/5=8k ==> m=40k
7k+8k+10k=750
25k=750
k=30 ==> a=210
b=240
c=300
Răspuns:
Explicație pas cu pas:
a+b+c=750
a/7=b/8 a=7b/8
b/1/5=c/1/4 c=5b/4 7b/8+b+5b/4 =750 (7+8+10)b=750×8
25b=75×80 ⇒b=240
a=7×240/8=7×30=210
c=5×240/4=5×60=300