book Maths Puzzle Numerical Ability

z^2+10z+24
_____
z^2+15z=54 divided by

z^2+4z

z^2+2z-63

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book Other Question

I am supposed to find the value of x and y and do not know where to start. Here is the problem:

x-4y+22
2x+5y=-21 Find the perimeter of rectangle:

A= 250sq. ft (Inside rectangle)
25 ft. (outside rectangle)