CAT Practice Question and Answer
8Q: A group of 1200 persons consisting of boys and girls is travelling in a Bus. For every 15 boys there is one girl. The number of girls in the group is ? 1814 05b5cc71be4d2b4197774f52b
5b5cc71be4d2b4197774f52b- 160false
- 265false
- 370false
- 475true
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Answer : 4. "75"
Explanation :
Answer: D) 75 Explanation: If there are x girls, then x + 15x = 120016x = 1200x= 1200/16 = 75
Q: A is 30% more efficient than B. How much time will they, working together, take to complete a job which A alone could have done in 23 days ? 1814 05b5cc6dee4d2b4197774ea99
5b5cc6dee4d2b4197774ea99- 19 daysfalse
- 211 daysfalse
- 313 daystrue
- 415 daysfalse
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Answer : 3. "13 days"
Explanation :
Answer: C) 13 days Explanation: Ratio of times taken by A and B = 100 : 130 = 10 : 13.Suppose B takes x days to do the work. Then, 10 : 13 :: 23 : x => x = ( 23 x 13/10 ) => x = 299 /10. A's 1 day's work = 1/23 ;B's 1 day's work = 10/299 . (A + B)'s 1 day's work = ( 1/23 + 10/299 ) = 23/299 = 113 . Therefore, A and B together can complete the work in 13 days.
Q: Absolute value of 9? 1814 05b5cc675e4d2b4197774c143
5b5cc675e4d2b4197774c143- 10false
- 29true
- 38false
- 4-9false
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Answer : 2. "9"
Explanation :
Answer: B) 9 Explanation: Absolute value of a number : It means that the distance of a number from 0 on a number line. Here absolute value of 9 is that on a number line 9 is 9 units away from 0. Hence its absolute value is 9. Similarly, absolute value of -9 means -9 is also 9 units away from the 0 on number line. Hence, absolute value of -9 is also 9. Hence, the absolute value of 9 is 9.
Q: Raghu earns 25% on an investment but loses 10% on another investment. If the ratio of the two investment is 3:5. What is the gain or loss on two investments taken together ? 1813 05b5cc754e4d2b4197774fb72
5b5cc754e4d2b4197774fb72- 11.251 %false
- 23.125 %true
- 37.21 %false
- 49.451 %false
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Answer : 2. "3.125 %"
Explanation :
Answer: B) 3.125 % Explanation: Taking the 2 investments to be 3x and 5x respectivelyTotal income of Raghu = (3x) x 1.25 + (5x) x 0.9 = 8.25Therefore, Gain% = 0.25/8 x 100 = 3.125 %.
Q: Where is the National Institute of Jute and Allied Fibre Technology located ? 1813 05b5cc6cee4d2b4197774e288
5b5cc6cee4d2b4197774e288- 1Telanganafalse
- 2Andhra Pradeshfalse
- 3West Bengaltrue
- 4Haryanafalse
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Answer : 3. "West Bengal"
Explanation :
Answer: C) West Bengal Explanation:
Q: Two trains are moving in opposite directions at 60 km/hr and 90 km/hr. Their lengths are 1.10 km and 0.9 km respectively. The time taken by the slower train to cross the faster train in seconds is ? 1813 05b5cc6d7e4d2b4197774e6e2
5b5cc6d7e4d2b4197774e6e2- 142 secfalse
- 244 secfalse
- 346 secfalse
- 448 sectrue
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Answer : 4. "48 sec"
Explanation :
Answer: D) 48 sec Explanation: Relative speed = 60 + 90 = 150 km/hr. = 150 x 5/18 = 125/3 m/sec. Distance covered = 1.10 + 0.9 = 2 km = 2000 m. Required time = 2000 x 3/125 = 48 sec.
Q: The new product development process usually starts with 1813 05b5cc6b4e4d2b4197774d4d9
5b5cc6b4e4d2b4197774d4d9- 1idea generationtrue
- 2market strategy developmentfalse
- 3concept developmentfalse
- 4idea screeningfalse
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Answer : 1. "idea generation"
Explanation :
Answer: A) idea generation Explanation:
Q: A mixture contains 25% milk and rest water. What percent of this mixture must taken out and replaced with milk so that in mixture milk and water may become equal. 1813 05b5cc6b6e4d2b4197774d59e
5b5cc6b6e4d2b4197774d59e- 131.8%false
- 231%false
- 333.33%true
- 429.85%false
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Answer : 3. "33.33%"
Explanation :
Answer: C) 33.33% Explanation: Now, take percentage of milk and applying mixture rule 25 100 50 50 25 = 2 : 1 Hence required answer = 1/3 or 33.33%