If a and b are positive integers such that a/b = 0.68, which of the following must be a divisor of a? Choose the correct choice from the following options:	A) 12	B) 13	C) 22	D) 25	E) 17
1) A and B are positive INTEGERS   2) A/B = 0.68   A = 68   B = 100   68/100= 
<gadget id="calculator">68/100</gadget>
<output>17/25 = around 0.68</output>
0.68   These values are NOT the smallest possible values though (since they're both even, we can divide both by 2)...   A= 34   B = 50   34/50= 
<gadget id="calculator">34/50</gadget>
<output>17/25 = around 0.68</output>
0.68   This can be further reduced to:   A= 17   B = 25   There is no other way to reduce this fraction, so A must be a multiple of 17 and B must be an equivalent multiple of 25. At this point though, the value of B is irrelevant to the question. We're asked for what MUST divide into A....   Since A is a multiple of 17, we have to 'factor-down' 17. This gives us only 17, apart from 1. So this integer MUST be a factor of A. You'll find the match in the answer choices.   Answer: 17
<result>E</result>
If a and b are positive integers such that a/b = 0.68, which of the following must be a divisor of a?