Răspuns :
x -banii lui Ovidiu
5/4*x=100
x=100:5/4
x=100*4/5
x=20*4
x=80
cheltuieste 4/5*80=4*16=64
80-64=16
5/4*x=100
x=100:5/4
x=100*4/5
x=20*4
x=80
cheltuieste 4/5*80=4*16=64
80-64=16
a=suma
5/4 din s= 100
100:5=20
20x4=80
80:5=16 ( rest )
ax5/4=100
a=100x4/5=80 lei
cheltuie:
80 x 4/5=64 lei
80-64= 16 lei rest
5/4 din s= 100
100:5=20
20x4=80
80:5=16 ( rest )
ax5/4=100
a=100x4/5=80 lei
cheltuie:
80 x 4/5=64 lei
80-64= 16 lei rest