the overall age of x and y is 11 year greater than the overall age of y and z. z is how many decades younger that x?	Choose the correct choice from the following:
A) 11	B) 15	C) 12	D) 17	E) 19
<gadget id="calculator">11 / 1</gadget>
<output>11</output>

<result>A</result>
the overall age of x and y is 11 year greater than the overall age of y and z. z is how many decades younger that x?
divide(11, const_1)
"a 11 ( x + y ) â € “ ( y + z ) = 11 x â € “ z = 11"