Question

DAU COROANA!!! VA ROG

Answer 1

c = cantitatea initiala de cirese ;

cat a vandut la primul = c/2+1/2 = (c+1)/2 ; cat a ramas = c-(c+1)/2 ==(2c-c-1)/2 = (c-1)/2 ;

cat a vandut la al doilea = [(c-1)/2]/2+1/2 = (c-1)/4+1/2 = (c-1+2)/4 = (c+1)/4 ; cat a ramas = (c-1)/2-(c+1)/4 = (2c-2-c-1)/4 = (c-3)/4 ;

cat a vandut la al treilea = [(c-3)/4]/2+1/2 = (c-3)/8+1/2 = (c-3+4)/8 = (c+1)/8 ;

c = (c+1)/2+(c+1)/4+(c+1)/8+3 numitor comun 8

8c = 4(c+1)+2(c+1)+c+1+24 ; 8c = 4c+4+2c+2+c+1+24 ;

8c-4c-2c-c = 4+2+1+24 ; c = 31 kg cirese ;