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coroana
help, am nevoie!


Coroana Help Am Nevoie class=

Răspuns :

In total Mirela a cheltuit 55% (adica 25%+30%)din suma initiala (S) si a ramas cu 360 lei.

S-S*55/100 = 360
(100*S-55*S)/100 = 360
45*S/100 = 360 => 

S = 360*100/45 = 36000/45 = 800.

Mirela a avut 800 lei.