What Time Is It?

[stilltruckin]

I have a 12-hour digital clock that loses exactly 3 minutes per hour.

At midnight (12:00) it is correct.

Now, later the same day, it reads 05:06 PM, but what time is it?

[O2Trees]

I get it to 6.00pm (didn't see Aberdeen Man's, honest - forgot to add in extra 36 min first time round)

[aberdeenman]

i'd say 6:00pm

[Hidden]

yep 6pm

[stilltruckin]

Want the answer?

[Hidden]

Yep please. My brain is hurting! x

[stilltruckin]

Yes, it's 6:00 PM. too easy eh?

This one may ring a bell with some of you. If so, please refrain from jumping in too soon:

Someone showed me 3 closed boxes and told me that 2 of them are empty and one contains loadsa money.

They told me I can pick one box and have its contents, if any, so I picked a box.

Then they, knowing which one the money is in, opened one of the boxes I hadn't picked, showed me it was empty, and asked me if I'd like to switch my choice to the other unopened box.

Should I switch or not - and why?

[Sohara in reply to stilltruckin]

I am sure this is about percentages & clever but I wouldn't swap just thinking that if I had the empty box he wouldn't offer me a swap.

[stilltruckin in reply to Sohara]

That's an aspect that hadn't occurred to me. Good thinking. Mind you, if he wanted to keep the money he wouldn't make the offer in the first place.

And in fact the money doesn't matter to him, he's a billionaire. He's just interested in seeing what I choose to do . . .

[butter-fly]

Yup, 6pm Stilltrucking.

[butter-fly in reply to butter-fly]

Got it before you gave the answer!!!

[stilltruckin]

I'll PM you.

[stilltruckin]

That's because it's so counterintuitive.

[peterjones in reply to stilltruckin]

illtruckin JUST BUY ANOTHER CLOCK MATE THAT MIGHT SOLVE YOUR PROBLEM SEE YER

PETER JONES QUEENSLAND AUSTRALIA PSP SUFFERER

[stilltruckin]

Perhaps you're right. I'll do that.

[Hidden]

Hi I don't do maths so can't understand why it is 6pm. Can someone explain it to me please? x

[stilltruckin in reply to Hidden]

My clock is correct at midnight. !8 hours later it's 6 PM and my clock has lost 3 minutes with each passing hour. 18*3=54 minutes. At 6 PM my clock reads 54 minutes earlier than that, i.e., 05:06 PM

[Hidden]

Ah I see sort of. Thanks. x

[Hidden]

I don't get it, always came bottom in maths. Brain dead LeeLee

[Colours23]

Don't know

[stilltruckin in reply to Colours23]

See above.

[Colours23]

It's ok I don't do nos( dyslexic).

[Hidden]

This one was logical enough. The socks were quite straightforward and I gave up on the tomatoes because the answer was too easy and I assume if something is easy, it couldn't possibly be right.

BTW, I should be honest about the socks. I read it out to my husband and he'd worked out the annswer before I'd finished reading the question

Getting back to the money, I have no idea off the top of my head. Will have to think about it.

[stilltruckin in reply to Hidden]

Curious, what answer did you arrive at for 'tomatoes'? If it was something like 9.05 kg it's incorrect.

I've re-posted the 'money box' one on its own thread, here: healthunlocked.com/blf/post...

[Azure_Sky]

I bought my husband a Sony radio controlled clock but it is 10 minutes fast. I have been trying to reset it but so far I haven't managed it. The manual is like a monkey puzzle.

[DecD]

6:00PM or 18:00 hours

[stilltruckin in reply to DecD]

Well done.

[Hidden]

I'll have to go back to the tomatoes and do it again, because needless to say I've forgotten it already. But I did it just like a maths question in school, subtracting the weight of water that evaporated from the original weight of the tomatoes.I'm sure it had to be more complicated then that.

[stilltruckin in reply to Hidden]

Mmmm. Clearly if the water content is 95% of a total weight of 10 kg then it weighs 9.5 kg.

But how can you calculate the weight of evaporated water without first knowing the total weight of which the remaining water is 90%, which is the answer you're trying to calculate ?

[Hidden in reply to stilltruckin]

Okay, I've had to do it again. First scenario the answer appeared to be 9.5 kg but then looking more closely, we're dealing with 90% water and 10% tomatoes so the second scenario answer would be 5kg total weight, 4.5kg of which is water and .5kg of which is tomatoes.

I had to consult my husband again and we nearly came to blows over it He says the question is phrased incorrectly and that the ambiguity will stop people of limited intellect ( such as his wife), working out the correct answer. So please, put us out of our agony and reveal the answe

[stilltruckin in reply to Hidden]

Yes, the correct answer is 5 kg. Simple to calculate if approached the right way, but a with very counter-intuitive result.

In what way was it phrased incorrectly, or ambiguously?

The puzzle, exactly as you received it:

Take 10 kilograms of tomatoes with a water content of 95%.

Spread them out under the sun until the water content is down to 90%.

What do they now weigh?

How could it be improved?

[Hidden in reply to stilltruckin]

Quote ' it should have said, 90% of them'. That's his opinion but in all fairness it took so long for me to come away from the 9.5 answer and finally arrive at the correct answer, the only excuse he could find for my lack of mathematical ability, was that the question was ambiguous. I have always been terrible at maths.

[stilltruckin in reply to Hidden]

Doesn't need much working out once you look at it the right way. Most people fail to do that, so you did well

[Hidden in reply to stilltruckin]

All credit to 'himself' for pointing me in the right direction