Răspuns :
a=800
b=800:2=400
c=400:4x3=300
d=(800+400):6x2=400
a+b+c+d=800+400+300+400=1900
b=800:2=400
c=400:4x3=300
d=(800+400):6x2=400
a+b+c+d=800+400+300+400=1900
A + B + C + D = X
B = 800 * 1/2 = 400
A = 800
C = B * 3/4
C = 400 * 3/4
C = 300
D = (A + B) * 2/6
D = (800 + 400) * 2/6
D = 1200 * 2/6
D = 400
A + B + C + D = 800 + 400 + 300 + 400
A + B + C + D = 1900
B = 800 * 1/2 = 400
A = 800
C = B * 3/4
C = 400 * 3/4
C = 300
D = (A + B) * 2/6
D = (800 + 400) * 2/6
D = 1200 * 2/6
D = 400
A + B + C + D = 800 + 400 + 300 + 400
A + B + C + D = 1900