Question 100708
X+Y+Z=20
Y=4X
X+Y=8
X+4X=8
5X=8
X=8/5 ANSWER.
Y=4*8/5
Y=32/5 ANSWER.
8/5+32/5+Z=20
40/5+Z=20
8+Z=20
Z=20-8
Z=12 ANSWER.