Answer:
A
Step-by-step explanation:
You know a horse has 4 legs and one head and a human has one head and two legs. Now, if you have 24 horses, then you have 24 heads and 96 legs, because 24*4 is 96. If you have 50 humans, you have 50 heads and 100 legs: 50*2 is 100.
24 heads from horses+50 heads from humans=74 heads
96 legs from horses+100 legs from humans=196 legs
If you try to do this with the other options, you are not going to get 74 heads and 196 legs.
Let's do it with option b: 20 horses and 50 humans
Horses: 20*4=80 legs and 20 heads
Humans: 54*2=108 legs and 54 heads
80 legs from the horses+108 legs from humans=188 legs
54 heads from humans+20 heads from horses=74 heads
Now, you do get 74 heads, but not 196 legs.
