If the integer n leaves a remainder of 4 when divided by 5, then what is the largest possible
remainder when 2n is divided by 15? Select the correct option.
A) 10  B) 11  C) 12  D) 13  E) 14
Since n leaves a remainder of 4 when divided by 5, it leaves a remainder of 4, 9, or   14 when divided by 15. Thus 2n leaves a remainder of 2 * 4= 
<gadget id="calculator">2 * 4</gadget>
<output>8</output>
8, 2 * 9-15= 3, or  2 *14-15= 
<gadget id="calculator"> 2 *14-15</gadget>
<output>13</output>
13   when divided by 15, and the maximum remainder is 13 .   correct answer 13
<result>D</result>
If the integer n leaves a remainder of 4 when divided by 5, then what is the largest possible
remainder when 2n is divided by 15?