x and m are positive numbers, and m is a multiple of 3
Quantity A Quantity B
xm x m/3
Again, looking at this logically, since both x and m are variables, with very general conditions, the relationship cannot be determined and the answer is D.
Let’s plug in different numbers for x, but m = 3
m = 3, x = 2
QuantityA = 23= 8 and QuantityB = 21 = 2, so A is greater than B
m= 3, x = 1
QuantityA = 13 = 1 and QuantityB = 11 = 1, so they are equal
With different values plugged in, the answers are different, so the answer is D, the relationship cannot be determined.