Question

daca doua camasi si sase tricouri costa 250 lei iar foua camasi si un tricou costa 125 lei .cat costa un tricou.cat costa o camasa?? dau coroana.☺

Answer 1

camasi=c
tricouri=t

2c+6t=250
2c+1t=125=> t=125-2c

2c+6*(125-2c)=250
2c+750-12c=250
750-250=-2c+12c
500=10c
c=500:10
c=50

2c+1t=125
2*50+1t=125
100+1t=125
t=125-100
t=25