Question

Given the following number line, what number could be A if XY - ZA?

X
Y Z
-6
A. -5
B. -1
C. 5
D. 6

Answer 1

C. 5

Explanation:

XY= -1-(-5)= 4

ZA= A-1= 4 ⇒ A=1+4= 5

A=5