tag:blogger.com,1999:blog-3802979373213475425.post1578530527428093738..comments2018-09-21T15:44:08.843+05:30Comments on Critical Thinking Puzzles: What is the speed of the car ?Eldhose Babyhttps://plus.google.com/111638910038568381260noreply@blogger.comBlogger11125tag:blogger.com,1999:blog-3802979373213475425.post-71151213412086629472012-06-27T01:31:24.929+05:302012-06-27T01:31:24.929+05:30The solution is pretty easy - if we label the digi...The solution is pretty easy - if we label the digits of the first marker as "ab", then the mile markers are:<br /><br />ab<br />ba<br />a0b<br /><br />In that order. Since the same distance is traveled between each pair of markers, and since ba-ab < 100, we know that a must be 1. So the markers are:<br /><br />1b<br />b1<br />10b<br /><br />Now - since b + 2n ends in b, we know that n must end in 0 or 5, and b must be 1 or 6. The answer is 16, 61, 106, and the speed is 45 mph. -KevinAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-3802979373213475425.post-51454627546427557132012-05-27T06:04:29.597+05:302012-05-27T06:04:29.597+05:30The problem should indicate that the final milesto...The problem should indicate that the final milestone's digits are not in the same order...it appears as if they are in the same order as the second marker, which doesn't allow for a solution. Thanks :)Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-3802979373213475425.post-89106389504952437032012-02-08T05:07:58.393+05:302012-02-08T05:07:58.393+05:30speed=10B+A-(10A+B);
100A+B=10B+A+speed*1=2*10B+A)...speed=10B+A-(10A+B);<br />100A+B=10B+A+speed*1=2*10B+A)-(10A+B)<br />or<br />108A=18B or 6A=B, or A=1, B=6.<br />speed=61-16=45.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-3802979373213475425.post-9841341323237284912012-02-06T17:54:43.622+05:302012-02-06T17:54:43.622+05:30Speed of the car is 45kmph. First milestone will b...Speed of the car is 45kmph. First milestone will be done in 16 second one in 61 and the last one is 106.distance formula calculatorhttp://calculator.tutorvista.com/math/128/distance-formula-calculator.htmlnoreply@blogger.comtag:blogger.com,1999:blog-3802979373213475425.post-33875781777158978882011-11-12T02:11:17.543+05:302011-11-12T02:11:17.543+05:30answer is 45 kmph .1st marker show 16 then 2nd sho...answer is 45 kmph .1st marker show 16 then 2nd show 61 and 3rd show 106soumyabratnoreply@blogger.comtag:blogger.com,1999:blog-3802979373213475425.post-68670564651312036162011-10-25T23:55:45.585+05:302011-10-25T23:55:45.585+05:30Can anyone explain how one solutions this problem?...Can anyone explain how one solutions this problem? Basic algebra? If so, what is the equation?<br />ThanksAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-3802979373213475425.post-41439216768642450762011-09-20T08:27:55.658+05:302011-09-20T08:27:55.658+05:30Deepak and Babu vincent are correct.
@hotmail.com...Deepak and Babu vincent are correct.<br /><br />@hotmail.com - that's a bizarre answer. We're told that the car is travelling at a constant speed and takes 1 hour between each milestone.<br /><br />Plus, 102 - 21 = 81 not 90.<br /><br />@Occum - you're just making stuff up. Why on earth would you assume that the car is driving in the USA? <br /><br />And you've got the direction wrong too. The car must pass the 16 mile marker first since we're told that the third marker has three digits.Secret SquÃ¯rrelnoreply@blogger.comtag:blogger.com,1999:blog-3802979373213475425.post-75358411654596496992011-09-19T23:30:38.037+05:302011-09-19T23:30:38.037+05:30I say 45 mph. and he is travelling East to West. ...I say 45 mph. and he is travelling East to West. Mile markers are 1 mi. apart in Western States (Cal. excepted). Ideally the road would be flat like Kn or NE.. He hits mile marker 61 and travels one hr. to mi. marker 16. The difference is 45.Occumnoreply@blogger.comtag:blogger.com,1999:blog-3802979373213475425.post-53351371200847053952011-09-18T12:16:38.910+05:302011-09-18T12:16:38.910+05:30Speed of the car 90.1st milestone 12, 2nd mileston...Speed of the car 90.1st milestone 12, 2nd milestone 21 and 3rd milestone 102.hotmail.comnoreply@blogger.comtag:blogger.com,1999:blog-3802979373213475425.post-83092162993215333682011-09-17T16:05:59.810+05:302011-09-17T16:05:59.810+05:30speed of the car 45.speed of the car 45.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-3802979373213475425.post-34035749639069527152011-09-16T17:25:56.913+05:302011-09-16T17:25:56.913+05:30Car Speed was 45mph
1st Mile stone with 16
2nd wi...Car Speed was 45mph<br /><br />1st Mile stone with 16<br />2nd with 61<br />and the final with 106Deepakhttps://www.blogger.com/profile/08377313216377227433noreply@blogger.com