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2014-06-11T20:45:08+03:00
[a,b,c] d.p [4,7,14]
a/4=b/7=c/14=K
a/4=k=a=4k
b/7=k=b=7k
c/14=k=c=14k
4k+7k+14k=750
25k=750
k=750:25
k=30
a=30*4
a=120
b=30*7
b=210
c=30*14
c=420
120+210+420=750