30 September 2023 , 06:00
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Riddles can be seriously tricky and can leave you sitting there feeling baffled wondering how you're supposed to work them out. They're a fun way to get competitive with friends and family, as you all desperately try to guess the answer first before anyone else, testing your collective intelligence.
This latest riddle from Insider has been dubbed as a 'hard riddle for smart people', and it focuses on a bridge, and whether there's enough time for a group of people to get across. Thankfully, there's no time limit, so you're not under pressure and you can take your time to work it out properly - so grab a paper and pen and get figuring it out.
The riddle goes like this: "Four people arrive at a river with a narrow bridge that can only hold two people at a time. It's nighttime and they have one torch that has to be used when crossing the bridge. Person A can cross the bridge in one minute, B in two minutes, C in five minutes, and D in eight minutes. When two people cross the bridge together, they must move at the slower person's pace. Can they all get across the bridge in 15 minutes or less?"
Confused? Us too. But there is a solution to this tricky riddle. Can you work it out? Or have you already figured it out for yourself? The answer is coming up, so if you're still trying to work it out, stop reading on.
Answer:
'I don't want children staying up late at weekends - I really need adult time'
Yes, the group can cross in exactly 15 minutes. The group of four must follow these steps.
1. First, A and B cross the bridge and A brings the light back. This takes 3 minutes.
2. Next, C and D cross, and B brings the light back. This takes another 10 minutes.
3. Finally, A and B cross again. This takes another 2 minutes.
Did you manage to work it out? Let us know in the comments.