Four athletes P, Q, R, S are participating in a 800 m race. At the start P gives Q, R, S a lead of T seconds. P overtakes Q at the 160 m mark, R at the 200 m mark and S at the 400 m mark. P beats S by 20 sec.R completes the race in 3 minutes. By how many seconds does R beat Q?

Hi Let velocity of P be Vp, Q be Vq, R be Vr and S be Vs and lead given by P to all of them be T seconds Now R takes 180 seconds to complete the race so his speed = 800/180 = 40/9 m/s Now P beats R at 200 m mark So we can say 200/Vp +T =200/Vr Substituting Vr we get 200/Vp +T =45 (1) Now P overtakes S at 400 m mark we get 400/Vp +T =400/Vs (2) Now it is given that P beats S by 20 seconds So as we know at 400m mark both P and S are together so in remaining 400 meters P covers those 400 meters 20 seconds faster than S so we get 400/vp +20 =400/vs (3) From (2) and (3) we get T=20 seconds Substituting in (1) we get Vp= 8m/s Now P beats Q at 160m mark so we get 160/vp +T=160/Vq we get 40=160/Vq so Vq=4m/sec So Time by Q to complete 800 m 800/4=200seconds so R beat Q by 20 seconds

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Any update on number of question in CAT

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Hi As per the official media release document by CAT authorities, it states that the number of questions will be reduced however what will be the exact number of questions is not informed by them and is unlikely they will release that. However to make students accustomed to the new pattern we have reduced half of our mocks to 24-20-24 and other half to 23-22-23.We expect the number of questions in actual CAT to be in this range only.

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Team cracku, There are some discrepancies i think in my mock score which i attempted few days back . In DASHCAT 2 my score was above 70 and in dashcat 10 my score was above 60. But in the across mock analysis section i am seeing low scores. This is also the case with few other mocks. Also attempts are inline with these marks although I still remember attempting more. Is there a problem?

sir is the update responsible for the new scores. what our score would have been in that new pattern ?

Hi Syed, we have reduced the questions, as per the new patttern, which can reflected in all the mocks accordingly depending on the number of questions in it after the update.As the exact pattern can't be known right now. We have updated half the number of mocks to 24-20-24 and the other half of them to 23-22-23.If you think there is some other error, kindly email the screenshot to support@cracku.in. Our team will look into it.