Word Problem

[InsertNameHere]

Ok, I missed out on this or something, because this is absolutley impossible for me. Here's an example:

"The starship Prometheus travels through hyperspace. In order for the Prometheus to travel through hyperspace its length (L) must vary directly with its width (W) squared. The length (L) varies directly with its mass (M) and power supply (P). the mass (M) varied directly with its width 9W) and its length (L)"

So I have these 3 equations

L=kW^2
L=kMP
M=kLW

And the next question says from these equations, derive another equation expressing power in terms of length and width.

So thats where I get lost, because I don't even know where to start!

If you could work it out or give me a starting point that'd be great

Thanks!

 

[TchrWill]

Ok, I missed out on this or something, because this is absolutley impossible for me. Here's an example:

"The starship Prometheus travels through hyperspace. In order for the Prometheus to travel through hyperspace its length (L) must vary directly with its width (W) squared. The length (L) varies directly with its mass (M) and power supply (P). the mass (M) varied directly with its width 9W) and its length (L)"

And the next question says from these equations, derive another equation expressing power in terms of length and width.

So thats where I get lost, because I don't even know where to start!

So I have these 3 equations

L=kW^2
L=kMP
M=kLW

Assuming the k is a unique factor of proportionality, each would be different, lets call tem r, s and t.

Thus,
L = rW^2
L = sMP
M = tLW

P = rW^2/M = rW^2/tLW = rW/tL