Question

Un camion a transportat o cantitate de marfa in 3 zile . In prima zi a transportat jumatate din cantitate total d marfa in ziua urmatoaare a transportat un sfert din cantitatea ramasa iar in a treia zi a transportat ultimele 15 tone de marfa .Calculati cantitatile totala de marfa transportant de camion.

Answer 1

m = cantitatea totala de marfa ;

prima zi a transportat = m/2 ; a ramas m-m/2 = m/2 ;

a doua zi atransportat = (m/2)x(1/4) = m/8 ;

m = (m/2)+(m/8)+15 ; numitor comun 8 ;

8m = 4m+m+120 ; 8m-5m = 120 ; 3m = 120 ; m = 120:3 = 40 tone ;