Quant - Boosters

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  CAT Question Bank - Time & Work
  • Rowdy Rathore  

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  Can you please share the solution?
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  Quant Boosters - Hemant Malhotra - Set 4
  quant - mixed bag • • hemant_malhotra  

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  @hemant_malhotra Hello sir, To the reference of the above question, I have a doubt. It says he makes 20% profit secretly and claims to sell at the 10% loss. Then, If cost price is 100 , he makes a loss of 10 I.e. 90(S.P.) but here he SECRETLY makes a profit of 20%. So won't that be 90/1.2?
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  Quant Boosters - Geometry - Raman Sharma - Set 2
  • Raman_Sharma  

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  @Raman_Sharma Please suggest approach
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  CAT Question Bank - Time, Speed & Distance
  question bank time speed & distance • • Rowdy Rathore  

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  @Rowdy-Rathore The speed of the jogger is 15 Km/h
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  CAT Question Bank - Cubes and Cuboids
  question bank • • Rowdy Rathore  

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  @Rowdy-Rathore solution is 32
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  Quant Boosters - Gaurav Sharma - Set 5
  quant - mixed bag • • gaurav_sharma  

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  @gaurav_sharma said in Quant Boosters - Gaurav Sharma - Set 5: Q26) John and David work on alternate days with John starting on the first day. John does 12.5% of the total work on the last day and finishes the work. If John alone can do the work in 6 days then which of following can be the number of days in which David alone can do the whole work?(a) 24 days(b) 12 days(c) 8 days(d) 10 days Need solutioninlinemathsinline mathsinlinemaths
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  CAT Question Bank - Functions
  question bank functions • • Rowdy Rathore  

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  @Rowdy-Rathore F(x) = x^4-360x^2+400F(x) = (x^2+20)^2 - 400x^2F(x) = (x^2-20x+20)(x^2+20x+20) = Prime NumberSince the value of second factor is always positive and greater than 1 therefore, 1st factor hasto be equals to 1.x^2-20x+20 = 1x^2-20x+19= 0On solving,x = 1, 19.Putting back the values in the original equation we get f(x) = 41 and f(x) = 761. So, the sum will be 41+761 = 802
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  Quant Boosters - Hemant Malhotra - Set 14
  quant - mixed bag • • hemant_malhotra  

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  @hemant_malhotra 8..............................................................
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  Quant Boosters - Hemant Malhotra - Set 9
  quant - mixed bag • • hemant_malhotra  

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  @hemant_malhotra I don't understand how 248 came
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  CAT Question Bank - Maxima & Minima
  question bank maxima & minima • • Rowdy Rathore  

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  @Rowdy-Rathore (26/3)^(1/8)
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  Quant Boosters - Hemant Malhotra - Set 12
  quant - mixed bag • • hemant_malhotra  

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  @hemant_malhotra 256 solutions.
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  CAT Question Bank - Escalators (Time, Speed & Distance)
  question bank time speed & distance • • Rowdy Rathore  

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  @Rowdy-Rathore 33.6 seconds.
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  Quant Boosters - Kamal Lohia - Set 8
  quant - mixed bag question bank • • kamal_lohia  

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  @kamal_lohia Option C - 3
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  Quant Boosters - Rajesh Balasubramanian - Set 4
  question bank time speed & distance • • rajesh_balasubramanian  

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  @rajesh_balasubramanian Hello. I was just looking for an online CAT coaching and stumbled upon this. The answer seems to be 7. And i don't think 10 can be a value for B. Eg: Take the Track length as 300m. A will complete it in 50secs. And B will take 75 secs to overlap A for the first time(300/4). I can email you my solution if you'd like to give it a look. Thank you.
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  Quant Boosters - Geometry - Raman Sharma - Set 1
  question bank • • Raman_Sharma  

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  @raman_sharma BC =1 , CA =2 so AB =rt5using similarity in triangle ABC and ADCwe get CD= 2/rt5 and diameter of circle as 4/rt5 now using tangent secant theoremCD^2 = CE * AC4/5 = CE *2CE =0.4so AE=1.6hence 1.6/0.4 = 4
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  Quant Boosters - Kamal Lohia - Set 1
  quant - mixed bag • • kamal_lohia  

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  @kamal_lohia 270/N +3 = 270/0.8N 270+3N/ N = 2700/8N 270+3N = 337.53N= 67.5N=22.5
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  Question Bank - Number of Integral/Positive/Non-Negative Solutions - Set 2
  question bank theory of equations • • zabeer  

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  @vikas_saini can u plz explain 2nd and 3rd+4th step again. 2nd step:what is -1-what are we reducing in it 3rd step: 3rd+4th step doesnt giv value in 2nd step. what are we missing in it. 3rd+4th= 2T-2
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  Quant Boosters - Hemant Malhotra - Set 11
  quant - mixed bag • • hemant_malhotra  

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  @hemant_malhotra as the no. of real roots is asked so it will always be 3
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  Quant Boosters - Anubhav Sehgal, NMIMS Mumbai - Set 2
  question bank • • anubhav_sehgal  

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  @anubhav_sehgal 79............? ??
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  Quant Boosters - Gaurav Sharma - Set 6
  quant - mixed bag • • gaurav_sharma  

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  @gaurav_sharma answer option:a