You have to get them all across the river unharmed. In a boat that only holds two people or apes at a time.
Only the gorilla and the humans can row the boat the monkeys are to small
Apes cannot outnumber humans or the humans die
The boat can only hold two people
Boat cannot travel when someone isn’t rowing it (human or gorilla)
We eventually came up with the solution (with the help of Mr Khalili). It was tough we tried eliminating all that ended in death and it all ended badly. Until we got some help and found out that two people could come back as well as go to the other bank. We eventually finished.
You try it
Put your results in the comments