Because I missed last week, I decided to do a bonus one this week. So there are TWo Tuesday Teasers to solve.
Just post any solutions you have in the comments field. Enjoy!
One family wants to get through a tunnel.
Dad can make it in 1 minute,
mama in 2 minutes,
son in 4 minutes,
and daughter in 5 minutes.
Unfortunately, through the tight tunnel can go at once not more than two persons moving at the speed of the slower one.
Can they all make it if they have a torch that lasts only 12 minutes and they are afraid of the dark?