Question

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5. Adrian are o suma de bani de cinci ori mai mare decat
Andreea. Alin are cu 50 de lei mai putin decat Adrian,
iar Ionut are o suma de bani de doua zeci si unu de ori
mai mica decat Alin.
Ce suma de bani are fiecare daca lonut are 15 lei?​

Answer 1

Răspuns:

a=Adrian,b=Andreea,c=Alin,d=Ionut

a=5b=>365=5b=>b=365:5=>b=73 lei are Andreea

c=a-50=>315=a-50=>315+50=a=>a=365 lei are Adrian

d=c/21=>c=21d=>c=21·15=>c=315 lei are Alin

d=15 lei are Ionut