x=suma initiala
In prima zi: 0,4 × x
a doua zi:
60+prima zi+a doua zi=x
Răspuns:
Explicație pas cu pas:
10/10=toata suma
60:2=30lei ( a doua zi )
30x3=90 lei ( restul)
10/10-4/10= 6/10 ( 90lei)
90:6=15 lei (1/6)
15*4=60lei ( prima zi )
60lei= (suma ramasa)
15x10=150 lei (toata suma )
-
Verificare:
30+60+60=150lei (toata suma )
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x=suma initiala
In prima zi: 0,4 × x
a doua zi:
60+prima zi+a doua zi=x
Răspuns:
Explicație pas cu pas:
10/10=toata suma
60:2=30lei ( a doua zi )
30x3=90 lei ( restul)
10/10-4/10= 6/10 ( 90lei)
90:6=15 lei (1/6)
15*4=60lei ( prima zi )
60lei= (suma ramasa)
15x10=150 lei (toata suma )
-
Verificare:
30+60+60=150lei (toata suma )