Question

If 2x = 5, 3y = 4, and 4z = 3, what is the value of 24xyz ?
a.12
b.18
c.36
d.48
e.60

Answer 1

x=5/2 y=4/3 z=3/4
24xyz
=24*(5/2)*(4/3)*(3/4)
60

Answer 2

2x = 5
x = 5/2

3y = 4
y = 4/3

4z = 3
z = 3/4

24(5/2)(4/3)(3/4)
(120/2)(4/3)(3/4)
(480/6)(3/4)
1440/24
60

I agree with madrockz :)

Answer 3

notice that you could multiply all three equations together
2x = 5, 3y = 4, and 4z = 3

2x * 3y *4z = 5*4*3
24xyz= 60