x = y - (20/y), where x and y are both > 0. If the value of y is doubled in the equation above, the value of x will Pick one:  A) decrease  B) stay the same  C) increase four fold  D) double  E) triples
Alternate approach   Plug in some values of y &gt; 0   Let y = 10   So, x = y - (20/y)   Or, x = 10 - (20/10)= 
<gadget id="calculator">10 - (20/10)</gadget>
<output>8</output>
8   Let y= 20   So, x = y - (20/y)   Or, x = 20 - (20/20)= 
<gadget id="calculator">20 - (20/20)</gadget>
<output>19</output>
19   So, x increases from 8 to 19   Hence the number increases 2.2 times, thus the correct answer will be (double)
<result>D</result>
x = y - (20/y), where x and y are both > 0. If the value of y is doubled in the equation above, the value of x will