in a group of ducks and cows, the total number of legs are 8 more than twice the no. of heads. find the total no. of buffaloes.
Choose one:	A) 5	B) 4	C) 6	D) 3	E) 2
<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<result>B</result>
in a group of ducks and cows, the total number of legs are 8 more than twice the no. of heads. find the total no. of buffaloes.
divide(8, const_2)
"let the number of buffaloes be x and the number of ducks be y = > 4 x + 2 y = 2 ( x + y ) + 8 = > 2 x = 8 = > x = 4 b"