Question

Ionut pleaca in tabara cuvo suma devbani.in prima zi cheltuie 2/6 din suma si inca 16:lei,a doua zi un dfert din suma ramasa si inca 12 lei,iar a treia zi 3/5 din rest si inca 15 lei.ii raman 45 lei.Ve suma a cheltuit in giecare zi? cu csti leiba plecat Ionut in tabara?

Answer 1

x-suma de bani,
Zi 1(y): y=2/6•(ori)x+16
Zi 2(z): z=y÷2+12
Zi 3= 3/5•z+15=45
3/5z=45-15
3/5z=30
z=30•5/3
z=150/3
z=50 lei (a treia zi)
Zi 2:
50=y/2+12
y/2=50-12
y/2=38
y=38•2=76 lei (a doua zi)
Zi 1:
76-12=2/6x
64=2/6x
2x=64•6
2x=384
x=192 lei