In one group there are some cows and chickens. The total number of legs there is 14 more than twice the number of heads. Now tell me how many cows are there?

 6.  एउटा समूहमा केही गाई र कुखुराहरु छन । त्यहाँ जम्मा खुट्टाको संख्या टाउकोको दोब्बर भन्दा 14 ले बढी छ । अब भन्नुहोस त्याहाँ रहेको गाईको संख्या कति हो?

In one group there are some cows and chickens. The total number of legs there is 14 more than twice the number of heads. Now tell me how many cows are there?

A. 5         

B. 7     

C. 10   

D. 12