Răspuns:
Explicație pas cu pas:
a+b+c = 9200
1,75 = 175/100 = 7/4
2,75 = 275/100 = 11/4
3si1/6 = 19/6
a/(7/4) =b/(11/4) = c/(19/6) = k
4a/7 = 4b/11 = 6c/19 =k
a =7k/4, b=11/4, c =19k/6
7k/4 +11k/4 +19k/6 =9200
21k +33k +38k = 12*9200
92k =12*9200
k = 12*100 = 1200
a=7*1200/4 = 2100
b=11*1200/4 = 3300
c=19*1200/6 = 3800