CAT Practice Question and Answer

Q: The minimum number of half years in which a sum of money kept at 60% compound interest will be quadrupled is ? 3010 0

  • 1
    2
    Correct
    Wrong
  • 2
    4
    Correct
    Wrong
  • 3
    3
    Correct
    Wrong
  • 4
    6
    Correct
    Wrong
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Answer : 4. "6"
Explanation :

Answer: D) 6 Explanation: Let us assume Amount be 100 Rs and we calculate in CI  First year 60% of 100 = 60 amount (100+60) is 160  Second year 60% of 160 = 96 amount (160+96) is 256  Third year 60% of 256 =153.6 amount (256+153.6) is 409.6  Here the Amount of 100 Rs is quadrapled in 3 years.  One year contains 2 half years  Three year has 6 half years.  Therefore,  It takes 6 half years.

Q: 9 tens 10 ones equals 3009 0

  • 1
    910
    Correct
    Wrong
  • 2
    90
    Correct
    Wrong
  • 3
    91
    Correct
    Wrong
  • 4
    100
    Correct
    Wrong
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Answer : 4. "100"
Explanation :

Answer: D) 100 Explanation: 9 tens 10 ones equals => 9 x 10 + 10 x 1 => 90 + 10 => 100.

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Answer : 2. "10"
Explanation :

Answer: B) 10 Explanation: Raj Tarun's age = 0 when he was born.Then, given his brother is 6 years old.Then his father is 6 + 32 = 38 when Raj Tarun was bornAnd his mother is 3 years yonger than his father => so his mother was 35 years old when Raj Tarun was bornand his sister is 25 year younger than his mother so Raj Tarun's sister was 10 years old when Raj Tarun was born.

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Answer : 2. "72/5 days"
Explanation :

Answer: B) 72/5 days Explanation: Work done by Shyam and Rahim in 8 days = 8/32 = 1/4 Remaining work to be done by Shyam and Ram = 1 - 1/4 = 3/4 Given efficieny of Ram is half of Rahim i.e, as Rahim can do the work in 48 days, Ram can do the work in 24 days. One day work of Ram and Shyam = (1/32 - 1/48) + 1/24 = 5/96 Hence, the total work can be done by Shyam and Ram together in 96/5 days.   Therefore, remaining work 3/4 can be done by them in 3/4 x 96/5 = 72/5 = 14.4 days.

Q: If Riya's age is four times the age of Siya and if Riya's age is 24 yrs , find the age difference between Riya and Siya ? 3006 0

  • 1
    2 yrs
    Correct
    Wrong
  • 2
    12 yrs
    Correct
    Wrong
  • 3
    18 yrs
    Correct
    Wrong
  • 4
    6 yrs
    Correct
    Wrong
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Answer : 3. "18 yrs"
Explanation :

Answer: C) 18 yrs Explanation: Let Siya's age = x Then Riya's age = 4x But given Riya's age = 24 => 4x = 24 => x = 6 Hence Siya's age = 6 yrs => The age difference = 24 - 6 = 18 yrs.

Q: Which one of the following is a landlocked harbour  ? 3005 0

  • 1
    Mumbai
    Correct
    Wrong
  • 2
    Haldia
    Correct
    Wrong
  • 3
    Vishakapatnam
    Correct
    Wrong
  • 4
    Ennore
    Correct
    Wrong
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Answer : 3. "Vishakapatnam"
Explanation :

Answer: C) Vishakapatnam Explanation:

Q: Which of the following is not an Output device? 3004 0

  • 1
    Scanner
    Correct
    Wrong
  • 2
    Moniter
    Correct
    Wrong
  • 3
    Printer
    Correct
    Wrong
  • 4
    Speakers
    Correct
    Wrong
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Answer : 1. "Scanner"
Explanation :

Answer: A) Scanner Explanation:

Q: How much does a clock lose per day, if its hands coincide ever 65 minutes ? 3003 0

  • 1
    1440/143 min
    Correct
    Wrong
  • 2
    184/13 min
    Correct
    Wrong
  • 3
    1425/18 min
    Correct
    Wrong
  • 4
    541/9 min
    Correct
    Wrong
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Answer : 3. "1425/18 min"
Explanation :

Answer: C) 1425/18 min Explanation: 55 min. spaces are covered in 60 min.60 min. spaces are covered in ((60/55) x 60) min = 720/11 min.Loss in 65 min. = (720/11 - 65 ) = 5/11Loss in 24 hrs = (5/11 x 1/65 x 24 x 60)min = 1440/143 min.

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