Answer Brain Boom Twenty-five people want to get across the river by boat which can five people at most. How many times are needed to get all the people across the river? Level 169

Answers to the game Brain Boom
IOS and Android
(Developer Shenzhen Yunbu Technology Co.,LTD)

Twenty-five people want to get across the river by boat which can five people at most. How many times are needed to get all the people across the river?
Level 169 Answer is 6