calculus
posted by xxx .
1. One day, a person went to horse racing area, Instead of counting the number of human and horses, he instead counted 74 heads and 196 legs. Yet he knew the number of humans and horses there. How did he do it, and how many humans and horses are there?
im stuck.. please help

Horses+Humans=74
4Horses+2humans=<196 
50x2 = 100 feet
24x4 = 96 feet
answer is 74 heads & 196 feet