Question

Il vreau si eu pe 39 cine il face corect primeste coroana si inca 10 puncte cine scrie raspuns la misto sa ia punctele i le iau inapoi va rog ma repede.

Answer 1

x=suma initiala
x/4=ziua 1
x-x/4=3x/4 =rest
3x/4×2/9 +10000=x/6+10000 = ziua 2
3x/4-(x/6+10000)=3x/4-x/6-10000=7x/12-10000 = rest
(7x/12-10000) × 1/3=7x/36-10000/3=ziua 3

x/4+x/6+10000+7x/36-10000/3+40000=x
x/4+x/6+7x/36+50000-10000/3=x
9x+6x+7x+36×50000-12×10000=36x
14x=1680000
x=120000 lei

verificare
120000 ×1/4=30000 lei ziua 1
120000-30000=90000 lei rest
90000 ×2/9+10000=30000 lei
90000-30000=60000 lei rest
60000 × 1/3= 20000 lei ziua 3
60000-20000=40000 lei rest