Răspuns:
a+15a/100=115a/100
b-25b/100=75b/100
c-5
115a/100=75b/100
115a=75b
23a=15b
a=15b/23
c=75b/100+5
a+b+c=226
15b/23+b+75b+100+5=226
15b/23+b+75b/100=226-5=221
1500b/2300+2300b/2300+1725b/2300=221
5525b/2300=221
b=221•2300/5525=92
a=15•92/23=60
c=75•92/100+5=69+5=74
a=60
b=92
c=74
60+92+74=226
Explicație pas cu pas:
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