[GMAT math practice question]1
Let <x, y, z> denote 2x + yz. Moreover, let x + y = 2p, y + z = 2q, z + x = 2r, xy = a, yz = b and zx = c.
How can < x, 3y, z > + < y, 3z, x > + < z. 3x, y > be written in terms of a, b, c, p, q and r?
A. p+q+r+a+b+c
B. 2(p+q+r+a+b+c)
C. 2(p+q+r+a+b+c)
D. 2(p+q+r)+3(a+b+c)
E. 3(p+q+r)+2(a+b+c)
Let <x, y, z> denote 2x + yz. Moreover, let x + y = 2p, y + z = 2q, z + x = 2r, xy = a, yz = b and zx = c.
How can < x, 3y, z > + < y, 3z, x > + < z. 3x, y > be written in terms of a, b, c, p, q and r?
A. p+q+r+a+b+c
B. 2(p+q+r+a+b+c)
C. 2(p+q+r+a+b+c)
D. 2(p+q+r)+3(a+b+c)
E. 3(p+q+r)+2(a+b+c)
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