Originally Posted by

**Natasha1** I had a question in a test the other day, which I couldn't work out. It sounds relatively trivial, but I just couldn't do it.

It went like this...

**In a farm there are 16 animals which are made up of rabbits and chickens only. We know there are 42 legs altogether.**

How many chickens and rabbits are there?

This is my version but it took me nowhere...

chicken = 2 legs

rabbits = 4 legs

2X + 4X = 42 so 6X = 42 and X = 7

So 7 chickens and 7 rabbits... but we need 16 animals altogether???? Need help please.