Răspuns :
1) 36x/100 =18x/50 ; x-18x/100 =50x/100-18x/100 =32x/50 rest
2)45/100*32x/50 =1440x/5000 =36x/125
3) 88 km
18x/50+36x/125+88 =x numitor 250
90x+72x+22000 =250x
250x-90x-72x =22000
88x =22000
x =250 km
2)
90y/100 =648 ; y =648*100/90 =720
90x/100 =720 ; x =720*100/90 =800 lei pret initial
(100-10% =90% reducerea cu 10 % )
2)45/100*32x/50 =1440x/5000 =36x/125
3) 88 km
18x/50+36x/125+88 =x numitor 250
90x+72x+22000 =250x
250x-90x-72x =22000
88x =22000
x =250 km
2)
90y/100 =648 ; y =648*100/90 =720
90x/100 =720 ; x =720*100/90 =800 lei pret initial
(100-10% =90% reducerea cu 10 % )