A man has some hens and cows. If the number of heads be 50 and the number of feet equals 144, then the number of hens will be Choose the correct choice from the following choices:	A) 22	B) 24	C) 26	D) 20	E) 28
28xplanation :   Let number of hens = h and number of cows = c   number of heads = 50   =&gt; h + c = 48 ---(28quation 1)   number of feet = 144   =&gt; 2h + 4c = 144   =&gt; h + 2c = 72 ---(28quation 2)   (28quation 2) - (28quation 1) gives   2c - c = 72 - 50=&gt; c = 22   Substituting the value of c in 28quation 1, we get   h + 22 = 50   =&gt; h = 50 - 22= 
<gadget id="calculator">50 - 22</gadget>
<output>28</output>
28   i.e., number of hens= 28   Answer : 28
<result>E</result>
A man has some hens and cows. If the number of heads be 50 and the number of feet equals 144, then the number of hens will be