Question

M is the midpoint of AB (line segment AB ) and N is the midpoint of MB ( line segment MB ). If A corresponds to 12 and N corresponds to -3, the B corresponds to.....................

ANSWER : -8

Answer 1

here ,
  
   A corresponds to 12

   M corresponds to 2

   N corresponds to -3

   B corresponds to -8

Answer 2

B  corresponds to B.

M = ( B+12 )/2 = B/2 + 6

N = -3 = (B/2 + 6)/2 + B /2 = 3 + 3B/4

3B/4 = -6

B = -8