Each successive term in the sequence 2048, 128, x, y, ... is obtained by multiplying the previous term by a constant. What is the value of x+y?
128 / 2048 ==1 / 16
1/16 x 128 ==8 - value of x
1 /16 x 8 ==1/2 - value of y
x + y ==8 + 1/2 ==8 1/2