There are some men and their cows in a grazing field The no of total heads are 40 and total legs are...........

Quantitative Aptitude (CDS) Average

There are some men and their cows in a grazing field. The no. of total heads are 40 and total legs are 200 including both men and cows. The no. of cows is?

Explanation:

Suppose there are only men, then the number of legs = 40×2 = 80
Now since there are ( 200- 80 ) = 120 legs extra, it means there are
120/2 = 60 cows ( since a cow has 2 extra legs than a man has .)