In a firm there are men and cows. In all, there are 21 heads and 64 feet. How many men and how many cows are in the firm?  Choose one:	A) 8 men and 13 cows.	B) 10 men and 11 cows.	C) 6 men and 15 cows.	D) 5 men and 16 cows.	E) 11 men and 10 cows.
10 men and 11 cows.   Let M = men and C = cows. We can come up with 2 equations.   M + C = 21   2M + 4C= 64   Solving the 2 equations will give 10 men and 11 cows.   Answer 10 men and 11 cows.
<result>B</result>
In a firm there are men and cows. In all, there are 21 heads and 64 feet. How many men and how many cows are in the firm?