Hey, Wrath

You're given all the information you need in order to work the question out. I've highlighted the key bits.

__Hints:__ (Try to work it out using this)

If 27% of shrubs are mangroves, what percentage are palmettos?

Now if 511 scrubs are just made up by the percentage of palmettos, 100% if scrubs are made up by?

__Solution__
27% are mangroves means that 73% are palmettos. We know that there are 511 palmettos, so if you call the total number of shrubs on attack $\displaystyle x$ then

$\displaystyle 0.73 x = 511 $

so x = 700.