If 0 < a < b and k = (3a + 5b)/b , which of the following must be true?	Options:
A) k < 2
B) k < 7
C) k > 3
D) k > 9
E) k > 11
Please follow posting guidelines (link in my signature) especially writing the correct topic title. Also do mention the source of the question if you select the tag:Source-Other Please Specify.   ~~~~   As for your question, it is very simple and straightforward with number plug in.   Assume a=1 and b=2 since a &lt; b, you get k = (3+10)/2= 
<gadget id="calculator">(3+10)/2</gadget>
<output>13/2 = around 6.5</output>
6.5, thus leaving the option k &lt; 7 as the correct answer..
<result>B</result>
If 0 < a < b and k = (3a + 5b)/b , which of the following must be true?