There are some pigeons and hares in a zoo. If heads are counted, there are 140. If legs are counted, there are 580. The number of hares in the zoo is?  Choices:  A) 120  B) 182  C) 190  D) 150  E) 137
140*2= 
<gadget id="calculator">140*2</gadget>
<output>280</output>
280   580   -----   300   1----2   ?----300= 150   Answer:150
<result>D</result>
There are some pigeons and hares in a zoo. If heads are counted, there are 140. If legs are counted, there are 580. The number of hares in the zoo is?