There are some pigeons and hares in a zoo. If heads are counted, there are 130. If legs are counted, there are 580. The number of hares in the zoo is?  Choose one:
A) 120  B) 182  C) 190  D) 137  E) 160
130*2= 
<gadget id="calculator">130*2</gadget>
<output>260</output>
260   580   -----   320   1----2   ?----320= 160   Answer:160
<result>E</result>
There are some pigeons and hares in a zoo. If heads are counted, there are 130. If legs are counted, there are 580. The number of hares in the zoo is?