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CSAT DAILY MISSION #100

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Question 1

Ten years ago, the average age of a family of 4 members was 24 years. Two children having been born, the average age of the family is the same today. What is the present age of the children, assuming that the difference between their ages is 2 years?

(A) 4 and 2

(B) 5 and 3

(C) 6 and 4

(D) 7 and 5

Question 2

There are five cities connected by roads as shown:Capture

If you design a route map so that a person can visit each city yet walk on all the roads exactly once, which can be one of the starting cities?

(A) B

(B) C

(C) D

(D) E

Question 3

Three friends, returning from a movie, stop to eat at a restaurant. After dinner, they paid their bills and were served mints on the table. Ram took 1/3rd of the mints, but returned four as he felt he had taken too much. Shyam then took 1/4th of what was left but returned three for similar reasons. Ravi then took half of the remainder but threw two back into the bowl. The bowl now had only 14 mints left. How many mints were originally in the bowl?

(A) 31

(B) 37

(C) 38

(D) None of these

Question 4

A cistern is filled by two pipes A and B in 4 hours and 6 hours respectively and emptied by a waste pipe C in 3 hours. When the cistern is half full A and B are closed and C is opened. After one hour B is turned on and after half an hour of B, A is also turned on. In what time after C is first opened, does the cistern become full?

(A) 11.5 hours

(B) 12.5 hours

(C) 13.5 hours

(D) None of these

Question 5

Train A traveling at 60 km/hr leaves Mumbai for Delhi at 6 p.m. Train B traveling at 90 km/hr also leaves Mumbai for Delhi at 9 P.M. Train C leaves Delhi for Mumbai at 9 P.M. If all three trains meet at the same time between Mumbai and Delhi, what is the speed of the Train C if the distance between Delhi and Mumbai is 1260 km?

(A) 90

(B) 100

(C) 110

(D) 120

Please note that the official solutions to this test will be provided with Mission # 99 on 15th May.

Comments

62 responses to “CSAT DAILY MISSION #100”

  1. Rohan Negi Avatar
    Rohan Negi

    1. A
    2. B
    3. D
    4. D
    5. D

  2. shivshakti Avatar
    shivshakti

    1)b
    2)b
    3)
    4)b
    5)

  3. sankirtan shukla Avatar
    sankirtan shukla

    1. A
    2. B
    3. D
    4. D
    5. D

  4. forumias Avatar
    forumias

    Practise makes one perfect. See solutions in the next day’s problem.

  5. forumias Avatar
    forumias

    We are including solutions in the Next Day’s Post.

  6. Ashish Avatar
    Ashish

    1) b
    2) b
    3) d
    4) b
    5) d

  7. Naveen Shekhar Avatar
    Naveen Shekhar

    1.B
    2.B
    3.D(Ans–36)
    4.B
    5.D

  8. M2K Avatar
    M2K

    BDDBD

  9. ABHISHEK Avatar
    ABHISHEK

    1.A
    2.B
    3.D(57mints)
    4.d(12 Hrs)
    5.A

  10. Thomas More Avatar
    Thomas More

    Happy by seeing that all are good at paper 2nd and solving questions nicely. but what is lacking is none are good at explanations means all are assuming that everyone knows how they reached at solutions so it lays down more responsibility on initiator to provide solution step by step. So that a disconnected people from these field also can understand. Thanks for the initiative it sill surely help us without considering the weightage of UPSC for this paper. keep continue.

  11. Praful Avatar
    Praful

    Q1. – b
    Q2. – b
    Q3. – d
    Q4. – b
    Q5. – d

  12. sunanda Avatar
    sunanda

    1) B
    2) B
    3) D
    4) B
    5) D

  13. NIKHIL Avatar
    NIKHIL

    Sorry, Correction, Ans for 4th is 12.5 hrs, (Earlier I misread as “one and half hours”, but its only “half an hour”)

    Solution –
    A-4hrs, B-6hrs, C-3 hrs.
    LCM of 4, 6 and 3 is 12.
    consider tank with 12 units as full.

    Now A fills tank with 3units per hour.
    B with 2units/hr
    and C empties with 4 units/hr.

    1) at the start tank was half full = 6 units.
    2) after one hour (C was open) =2 units.
    3) aft half an hour (B and C was open) = 2+1-2 = 1 unit.
    4) now all taps are open. but when all taps are open, 3+2-4 = 1 units/hr is rate of filling the tank.
    5) so 11 units will be filled up in 11 hurs.
    6) so solution = 11hrs+half and hour(aftr B and C was open) +one hour (after C was open) = 12.5 hrs

  14. Palash Gupta Avatar
    Palash Gupta

    B,B,D,B

    Someone plz help me with 5th ques.

  15. Golden Falcon Avatar
    Golden Falcon

    ” POSSIBLE CORRECT SOLUTIONS”
    Q1—-b
    Q2—-d
    Q3—d
    Q4—–c(by the time A is opened, the tank is already empty, So the effective time taken to fill the tank will be 12/ (3+2-1) = 12 hr…Now add 0.5 hrs and 1 hr given in the question…So final answer becomes 12+ 0.5 +1 = 13.5 hrs

    Q5—D

    Regards,

  16. simran Avatar
    simran

    It almost took 2hrs to find out d questions r frm which category n in which concept..
    even though I referred all quant books ..I cudnt find d solution for some… so wat I request is pls giv keys with explanations (analysis method etc)… so it saves our lot of time frm searching books to find out similar type of questions. .

  17. abhi Avatar
    abhi

    1-b
    2-b
    3-d
    4-b
    5-d

  18. Ayush Jaiwal Avatar
    Ayush Jaiwal

    Correction Q4) B 12.5 hours

  19. Shoma Avatar
    Shoma

    Thanks for this initiative!
    1B 2_(confused)3D 4B 5D..

  20. rajesh Avatar
    rajesh

    BBDDD. Please post the answers tmrw so that we can see where we are doing mistakes.

  21. Ayush Jaiwal Avatar
    Ayush Jaiwal

    Q1) B
    Q2) B
    Q3) D
    Q4) A
    Q5) D

    Nice initiative ForumIAS team, Thank you!

  22. Jodhvir Avatar
    Jodhvir

    1. B
    2. D
    3. D
    4. B
    5. D

  23. Vikram Prashar Avatar
    Vikram Prashar

    1 b
    2 c
    3 d
    4 –
    5 d

  24. arsenal Avatar
    arsenal

    could you please provide answer key with detailed solution(step by step) in the evening or next day??
    to solve all doubts..
    thank you for initiative

  25. rajesh Avatar
    rajesh

    BBDDD

  26. Pritam Avatar
    Pritam

    1. a 2.b 3.d 4.b 5.d

  27. Anonymus Avatar
    Anonymus

    BBDBD

  28. priya Avatar
    priya

    1-B
    2-D
    3-D
    4-
    5-C

  29. Arboreal Avatar
    Arboreal

    1 – 5 and 3 (B)
    2 – point C (B)
    3 – getting 36 (D)
    4 – 12.5 (B)
    5 – 120 (D)

  30. Rishabh Avatar
    Rishabh

    5,3…..C….None of these…12.5hrs….120kmph

  31. Mr Wayne Avatar
    Mr Wayne

    A
    B
    D
    B
    –

  32. Caartey Avatar
    Caartey

    B B D B D

  33. sneha Avatar
    sneha

    3 d
    4 C
    5 D

  34. Louis Avatar
    Louis

    Could you please upload solutions to these questions and add the link to the solutions to the next day’s mail?

  35. Louis Avatar
    Louis

    Solutions please – got 2 wrong 🙁

  36. teedee Avatar
    teedee

    B,B,D,?,D

  37. sneha Avatar
    sneha

    1 b
    2 option Could

  38. cma Avatar
    cma

    BDD–D

  39. Animesh Avatar
    Animesh

    Solution to Q 3 please provide

  40. Animesh Avatar
    Animesh

    Plz provide solution to Q 3

  41. Ashwin Avatar
    Ashwin

    @nikhil can u explain much clearly prob 4 plz….

  42. Raj Avatar
    Raj

    1 B
    2 B
    3D
    4 _
    5 D

  43. Ashwin Avatar
    Ashwin

    @suthan can u explain problem 4

  44. naveen Avatar
    naveen

    Bbdbd

  45. Vikram Avatar
    Vikram

    1. a 2. b 3. d 4.— 5. d

  46. NIKHIL Avatar
    NIKHIL

    Solutions –
    1. 5 and 3
    2. B option
    3. D
    4. C 13.5 – (LCM of 4,6 and 3 = 12, earlier tank had 6 units, aftr 1 hr, it had 2 units, aftr one and half hour it had, 1 units, now all taps are open and by each hour, 1 unit gets filled (3+2-4), thus 11hours + 1+1.5)
    5. D

  47. nitin Avatar
    nitin

    1) b.5 and 3
    2) d
    3) d. 36
    4) a.
    5) d

  48. abhijit Avatar
    abhijit

    1.b 5 and 3 2.d 3.d 4.a 5.d

  49. aruna Avatar
    aruna

    Please provide soutions along with methods(step by step analysis..new techniques, easy ways etc..) to solve dem..
    it wil prevent us to look for answers n methods in books… n saves our time…

  50. masood Avatar
    masood

    B D D – D

  51. suthan Avatar
    suthan

    Fourth ans is 12.5 hr

  52. akhil Avatar
    akhil

    Good problems.
    What about the answers :p

  53. ashwin kumar Avatar
    ashwin kumar

    sorry answer for 2nd one is B. 🙂

  54. PRIYANKA Avatar
    PRIYANKA

    1) C
    2) D
    3 C
    4 A
    5 B

  55. Avatar
    Anonymous

    BBDCD

  56. Raj Avatar
    Raj

    Pls provide answers

  57. rare Avatar
    rare

    bbdad

  58. Ashwin Avatar
    Ashwin

    1. 5,3
    2. option D
    3. option D
    4. i didnt get it
    5. option D

  59. Avatar
    Anonymous

    Answers
    1a

    3d

    5d

  60. preeti Avatar
    preeti

    1-b
    2-b
    3-d
    4-
    5-d

  61. Naveen Avatar
    Naveen

    Q1. 5 and 3

  62. Amar Avatar
    Amar

    A B D D D

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