CAT Practice Question and Answer
8Q: 'Brothers and sisters, I have none. But that man's father is my father's son'.How I and that man are related respectively? 1410 05b5cc6a3e4d2b4197774cc10
5b5cc6a3e4d2b4197774cc10- 1Father & Sontrue
- 2Brothersfalse
- 3Son & Fatherfalse
- 4Nephewsfalse
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Answer : 1. "Father & Son"
Explanation :
Answer: A) Father & Son Explanation: Given that man's father is my father's son => Me because i have no brothers => Mans father is me. Hence, that man is my Son.
Q: A,B,C can complete a work in 15,20 and 30 respectively.They all work together for two days then A leave the work,B and C work some days and B leaves 2 days before completion of that work.how many days required to complete the whole work? 1409 05b5cc690e4d2b4197774c45f
5b5cc690e4d2b4197774c45f- Show AnswerHide Answer
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Answer :
Explanation :
Given A,B,C can complete a work in 15,20 and 30 respectively. The total work is given by the LCM of 15, 20, 30 i.e, 60. A's 1 day work = 60/15 = 4 units B's 1 day work = 60/20 = 3 units C's 1 day work = 60/30 = 2 units (A + B + C) worked for 2 days = (4 + 3 + 2) 2 = 18 units Let B + C worked for x days = (3 + 2) x = 5x units C worked for 2 days = 2 x 2 = 4 units Then, 18 + 5x + 4 = 60 22 + 5x = 60 5x = 38 x = 7.6 Therefore, total number of days taken to complete the work = 2 + 7.6 + 2 = 11.6 = 11 3/5 days.
Q: The ratio between present ages of Renuka and Sony is 5 : 4 . 4 years ago, Sony's age was 24 years. What will be Renuka's age after 5 years ? 1409 05b5cc6b5e4d2b4197774d539
5b5cc6b5e4d2b4197774d539- 125false
- 230false
- 335false
- 440true
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Answer : 4. "40"
Explanation :
Answer: D) 40 Explanation: Present age of Sony = 24 + 4 = 28 years After 5 years Renuka's age = 7×5 + 5 = 40 years
Q: The age of Manisha and Sudeshna are in the ratio of 5 : 6 respectively. After 8 years the ratio of their ages will be 7 : 8. What is the difference of their ages ? 1409 05b5cc6c3e4d2b4197774dc1d
5b5cc6c3e4d2b4197774dc1d- 16false
- 24true
- 38false
- 410false
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Answer : 2. "4"
Explanation :
Answer: B) 4 Explanation: Let the age of Manisha and Sudeshna is 5x and 6x years respectively. According to the given data, 5x+8/6x+8 = 7/8 42x + 56 = 40x + 64 x = 4 Required Difference of their ages = (6 × 4) – (5 × 4) = 4 years.
Q: Antonym of:: Amicable 1408 05b5cc6a6e4d2b4197774cdb1
5b5cc6a6e4d2b4197774cdb1- 1Hostiletrue
- 2Loveablefalse
- 3Friendlyfalse
- 4Peacefulfalse
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Answer : 1. "Hostile"
Explanation :
Answer: A) Hostile Explanation: Amicable means Friendly or in Loveable, peaceful sense. Then Antonyms for Amicable are Opposite of Friendly => Unfriendly, Hostile, Unpeaceful, etc...
Q: Two candidates fought in a municipality election. One of them got 54% of the total votes pooled and won by 1080 votes. What was the total number of votes polled ? 1408 05b5cc74fe4d2b4197774fb2b
5b5cc74fe4d2b4197774fb2b- 112000false
- 213500true
- 315400false
- 411000false
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Answer : 2. "13500"
Explanation :
Answer: B) 13500 Explanation: Given in municipality election 54% votes have won by 1080 Let the total number of votes be x. 54x100 - 46x100 = 1080 8x = 108000 x = 13,500 Therefore, total number of votes = 13,500.
Q: A person's present age is two-fifth of the age of his mother. After 8 years, he will be one-half of the age of his mother. How old is the mother at present ? 1408 05b5cc6dce4d2b4197774e983
5b5cc6dce4d2b4197774e983- 136 yrsfalse
- 238 yrsfalse
- 340 yrstrue
- 442 yrsfalse
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Answer : 3. "40 yrs"
Explanation :
Answer: C) 40 yrs Explanation: Let the mother's present age be x years. Then, the person's present age = 2/5 x years. (2x/5 + 8) = 1/2 (x + 8) 2(2x + 40) = 5(x + 8) => x = 40.
Q: Calculate the number of bricks, each measuring 25 cm x 15 cm x 8 cm required to construct a wall of dimensions 10 m x 4 m x 5 m when 10% of its volume is occupied by concrete ? 1408 05b5cc6eee4d2b4197774ef16
5b5cc6eee4d2b4197774ef16- 16000true
- 25400false
- 33800false
- 44700false
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Answer : 1. "6000"
Explanation :
Answer: A) 6000 Explanation: Let 'B' be the nuber of bricks. => 10 x 4/100 x 5 x 90/100 = 25/100 x 15/100 x 8/100 x B => 10 x 20 x 90 = 15 x 2 x B => B = 6000

