Guest Posted June 3, 2008 Report Share Posted June 3, 2008 If forty bakers can cook 20 pizzas in 2 hours (120 min), than how long does it take for 2 bakers to bake 10 pizzas? Quote Link to comment Share on other sites More sharing options...
0 Guest Posted June 3, 2008 Report Share Posted June 3, 2008 Assuming they are using just one oven... Then, 60 minutes. 120 / 2 = 60 Quote Link to comment Share on other sites More sharing options...
0 Guest Posted June 3, 2008 Report Share Posted June 3, 2008 Assuming that each additional baker reduces the cooking time by a constant amount, I would say... 33 minutes 20 seconds. However, if there are 40 ovens and it takes 2 hours for a pizza to bake, then it would still take 2 hours. Quote Link to comment Share on other sites More sharing options...
0 Guest Posted June 3, 2008 Report Share Posted June 3, 2008 (edited) It sounds a bit silly, maybe it would only take 10 mins because the bakers wouldnt be getting under each others feet, but i must of done something wrong because I make it 20 hours? maybe its that time of night Edited June 3, 2008 by Georgie Quote Link to comment Share on other sites More sharing options...
0 Guest Posted June 4, 2008 Report Share Posted June 4, 2008 20 hours! 20 pizza for 40 baker x 120 min = 1 / 240 pizza per baker-min so 10 pizzas required 240 x 10 = 2400 baker-min. Since only 2 bakers avaialbe, the time taken should be 1200 min or 20 hours Quote Link to comment Share on other sites More sharing options...
0 Guest Posted June 4, 2008 Report Share Posted June 4, 2008 I got 20 hours. If forty bakers can cook 20 pizzas in 2 hours, then 2 bakers can cook 1 pizza in 2 hours. to cook 10 it will take 20 hours. Quote Link to comment Share on other sites More sharing options...
0 Guest Posted June 4, 2008 Report Share Posted June 4, 2008 one hour Quote Link to comment Share on other sites More sharing options...
0 akaslickster Posted June 4, 2008 Report Share Posted June 4, 2008 1 hour? Quote Link to comment Share on other sites More sharing options...
0 Guest Posted June 4, 2008 Report Share Posted June 4, 2008 If forty bakers can cook 20 pizzas in 2 hours (120 min), than how long does it take for 2 bakers to bake 10 pizzas?gotta be expensive, 1/2 a pizza per baker in two hours ?? Quote Link to comment Share on other sites More sharing options...
0 Guest Posted June 4, 2008 Report Share Posted June 4, 2008 How many ovens are there? Or does that change the answer? Quote Link to comment Share on other sites More sharing options...
0 Guest Posted June 4, 2008 Report Share Posted June 4, 2008 If forty bakers can cook 20 pizzas in 2 hours (120 min), than how long does it take for 2 bakers to bake 10 pizzas? Many people have got this, but here's the explanation. If forty bakers can cook 20 pizzas in 120 minutes, then... two bakers would take twenty times as long... so, two bakers can cook 20 pizzas in 2,400 minutes. And they could cook 10 pizzas in half that time.... So, two bakers, can cook 10 pizzas, in 1200 minutes... In other words, the correct answer is 20 hours, which other people have. Quote Link to comment Share on other sites More sharing options...
0 Guest Posted June 4, 2008 Report Share Posted June 4, 2008 this question is easy, it just tricks people because they think that less people means less time, but isnt... Quote Link to comment Share on other sites More sharing options...
0 Guest Posted June 4, 2008 Report Share Posted June 4, 2008 also, those pizza bakers must be very slow, it takes the local pizza shop like 10 mintues to cook a large cheese pizza (yum) Quote Link to comment Share on other sites More sharing options...
0 Guest Posted June 4, 2008 Report Share Posted June 4, 2008 I don't know what I was thinking with my previous guess. Still assuming that there is a direct, negative correlation between # of cooks and cooking time, 20 hours makes sense. If there is one oven and it takes 6 minutes per pizza, regardless of the number of bakers, then it would take 1 hour to cook 10 pizzas. Quote Link to comment Share on other sites More sharing options...
0 Guest Posted June 5, 2008 Report Share Posted June 5, 2008 Ya see, I'm thinking of it in this way: The number of Chefs doesn't matter unless there are multiple ovens. If there are more, then that is one slow kitchen. If there is one, then each pizza is maybe being put in there one at a time, meaning that each pizza has to cook before the next one goes in, meaning that each pizza cooks in 6 minutes. 10 * 6 = 60 minutes. HOWEVER, pizza ovens often hold more then one pizza at a time, which further compicates matters... Quote Link to comment Share on other sites More sharing options...
0 Gambit Posted June 5, 2008 Report Share Posted June 5, 2008 (edited) i got 300 mins...the riddle seems incomplete so ur answer depends on the assumptions you make nevermind... its wrong. serious miscalculation on my part... eagles right. less ppl doesn't mean less time... Edited June 5, 2008 by Gambit Quote Link to comment Share on other sites More sharing options...
0 Gambit Posted June 5, 2008 Report Share Posted June 5, 2008 Assuming that there is 1 oven and this oven makes one pizza at a time: then the number of chefs douesn't matter and 10 pizzas will take half the time to make than 20 pizzas. therefore 10 pizzas = 120/2 = 60 mins Quote Link to comment Share on other sites More sharing options...
0 Joe's Student Posted June 5, 2008 Report Share Posted June 5, 2008 I never knew bakers cooked pizzas... i always thought they baked nice buns Quote Link to comment Share on other sites More sharing options...
0 Guest Posted June 5, 2008 Report Share Posted June 5, 2008 If forty bakers can cook 20 pizzas in 2 hours (120 min), than how long does it take for 2 bakers to bake 10 pizzas? Why does it matter how many bakers there are? Quote Link to comment Share on other sites More sharing options...
0 Guest Posted June 8, 2008 Report Share Posted June 8, 2008 I found this in a mensa quiz book, so i have no idea how the answer is correct 2 hours, see above spoiler How do you make those words on the bottom of the posts? Quote Link to comment Share on other sites More sharing options...
0 Guest Posted June 8, 2008 Report Share Posted June 8, 2008 y dont they make smaller pizzas that'll be faster Quote Link to comment Share on other sites More sharing options...
0 Guest Posted June 8, 2008 Report Share Posted June 8, 2008 Maybe the riddle is translated, and by baker they mean either oven or the person... that would be how it got 2 hours maybe? ...I don't like this one anyways Quote Link to comment Share on other sites More sharing options...
0 Guest Posted June 8, 2008 Report Share Posted June 8, 2008 I dont mean to whinge but that was a bit of a let down heh. I was going to say 20 hours. Quote Link to comment Share on other sites More sharing options...
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If forty bakers can cook 20 pizzas in 2 hours (120 min), than how long does it take for 2 bakers to bake 10 pizzas?
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