One day, a person went to a horse racing area. instead of counting the number of humans an horses, he conuted 74 heads and 196 legs. how many humans and horses were there?
a. 37 humans and 98 horses
b. 24 horses and 50 humans
c. 31 horses and 74 humans
d. 24 humans and 50 horse

We know that there are 74 head, so we can just have 24 horses and 50 humans or 50 horses and 24 humans. Because 50+24=74

A is false, because 37+98≠74 and C too, because 31+74≠74.

So, it can be B or D.

If it's B, we have 24 horses and 50 humans. We have at all 196 legs.

 And  24*4+50*2=196.

So it's, B, we have 24 horses and 50 humans.

(for D we have 24*2+50*4=248 or 248≠196)