Răspuns :
a/8=b/12 b=12a/8=3a/2
c=(a+b+c)×62,5% c=500
a+b=800-500=300
a+3a/2=300
2a+3a=600
5a=600
a=120
b=300-120=180
c=(a+b+c)×62,5% c=500
a+b=800-500=300
a+3a/2=300
2a+3a=600
5a=600
a=120
b=300-120=180
a/8=b/12
b=12a/8=3a/2
c=(a+b+c)×62,5%
c=500
a+b=800-500=300
a+3a/2=300
2a+3a=600
5a=600
a=120
b=300-120
b=180
b=12a/8=3a/2
c=(a+b+c)×62,5%
c=500
a+b=800-500=300
a+3a/2=300
2a+3a=600
5a=600
a=120
b=300-120
b=180