a is the hundreds digit of the three digit integer x, b is the tens digit of x, and c is the units digit of x. a = 4b = 2c, and a > 0.
What is the difference between the two greatest possible values of x?
Tip: Dont stop till you have exhausted all answer choices to arrive at the correct one.  Choose the most appropriate option.
A) 124
B) 297
C) 421
D) 412
E) 842
Ratio of a:b:c= 4:1:2   Two possible greatest single digit values for a are 8 and 4   if a is 8, then x= 824   if a is 4, then x= 412   difference= 824-412= 
<gadget id="calculator">824-412</gadget>
<output>412</output>
412   412 is the answer
<result>D</result>
a is the hundreds digit of the three digit integer x, b is the tens digit of x, and c is the units digit of x. a = 4b = 2c, and a > 0.
What is the difference between the two greatest possible values of x?
Tip: Dont stop till you have exhausted all answer choices to arrive at the correct one.