Question

URGENT ! Alex si Ioana au impreuna 120 de lei. Alex are 60% din suma Ioanei. Suma de bani a lui Alex este...?

Answer 1

a+i=120
a=60/100*i⇒a=3/5i
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a=45lei
i=75 lei
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3/5i+i=120⇒amplificam cu 5 si eliminam numitorul adica 3i+5i=5×120⇒8i=600⇒i=600/8⇒i=75 lei

a=3/5*75⇒a=45lei