let's see if your brain is functioning by answering this.
there are three men on island and only one boat.
A boat can only carry 100 kilos.
three men weighs 200 kilos; 1 of them is 100 kilos and the two of them has a weigh of 50 kilos each. they want to go to island near to them.
now here's the question...
how they can move to other island without sinking?
remember; their boat can only carry 100kilos. excess even 1 kilo will make the boat sink.