For any positive x, y and z if x is n% of y and z is m% of y then what percentage E must x be of z? Answers:
A) (n/m)%
B) (m × n)%
C) (100 / [m × n]) %
D) (100 × m/n)%
E) (100 × n/m)%
x is n% of y M(100 × n/m)%ANS x= (n/100 )* y------------------------eq1   z is m% of y M(100 × n/m)%ANS z= (m/100 )* y------------------------eq2   Find equation of xz   substitute value of y from 2nd equation into Ist equation   so x= (n/100)*(100z/m)   so x= (n/m)z   or x= (100n/m)z/100   so answer (100 × n/m)% is 100n/m %.(100 × n/m)%
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For any positive x, y and z if x is n% of y and z is m% of y then what percentage E must x be of z?