Quantitative Aptitude Practice Question and Answer
8Q: K is 4 times as fast as L and working together, they can complete a work in 24 days. In how many days can L alone complete the work ? 2054 05b5cc774e4d2b4197775003e
5b5cc774e4d2b4197775003e- 130 daystrue
- 240 daysfalse
- 3120 daysfalse
- 480 daysfalse
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Answer : 1. "30 days"
Explanation :
Answer: A) 30 days Explanation: Given K=4L -->K+L = 4L+L = 5L These 5L people can complete the work in 24 days, which means L alone can do the work in (24 x 5)=120 days. Hence, K alone can do the work in 120/4= 30 days.
Q: एक नाव धारा के प्रतिकुल कुछ दूरी तय करने में 8 घंटे और 48 मिनट का समय लेती है जब कि वह वही समान दूरी धारा के अनुकुल तय करने में 4 घंटे का समय लेती है तो नाव की चाल और स्थिर जल में धारा की चाल का अनुपात क्या होगा? 2052 05b5cc6bce4d2b4197774d88b
5b5cc6bce4d2b4197774d88b- 17:4false
- 211:4false
- 34:7false
- 48:3true
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Answer : 4. "8:3"
Explanation :
Answer: D) 8:3 Explanation: Let the speed of the boat upstream be p kmph and that of downstream be q kmph Time for upstream = 8 hrs 48 min = 845hrs Time for downstream = 4 hrs Distance in both the cases is same. => p x 845= q x 4 => 44p/5 = 4q => q = 11p/5 Now, the required ratio of Speed of boat : Speed of water current = q+p2:q-p2 => (11p/5 + p)/2 : (11p/5 - p)/2 => 8 : 3
Q: 400 मीटर लम्बी रेलगाड़ी 60 किमी प्रति घण्टा की चाल से जा रही है। उसके सामने से रेलगाड़ी की विपरित दिशा में एक व्यक्ति 12 किमी प्रति घण्टा की चाल से भागा जा रहा है। रेलगाड़ी इस व्यक्ति को कितनी देर में पार कर लेगी? 2052 15d15fbab44a3a75f13296b82
5d15fbab44a3a75f13296b82- 150 सैंकण्डfalse
- 230 सैंकण्डfalse
- 320 सैंकण्डtrue
- 440 सैंकण्डfalse
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Answer : 3. "20 सैंकण्ड"
Q: 1397 x 1397 = ? Here what replaces '?' 2050 05b5cc6bbe4d2b4197774d853
5b5cc6bbe4d2b4197774d853- 11951609true
- 21821504false
- 32031489false
- 41847879false
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Answer : 1. "1951609"
Explanation :
Answer: A) 1951609 Explanation: 1397 x 1397
Q: If a man buys 1 lt of milk for Rs.12 and mixes it with 20% water and sells it for Rs.15, then what is the percentage of gain ? 2050 05b5cc74fe4d2b4197774fb12
5b5cc74fe4d2b4197774fb12- 125%true
- 230%false
- 317%false
- 419%false
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Answer : 1. "25%"
Explanation :
Answer: A) 25% Explanation: He has gain = 15 - 12 = 3,Gain% = (3/12) x 100 = (100/4) = 25.He has 25% gain.
Q: Find the next number in the number series? 1, 4, 12, 32, ? 2048 05b5cc6a8e4d2b4197774ce61
5b5cc6a8e4d2b4197774ce61- 180true
- 2100false
- 3192false
- 4169false
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Answer : 1. "80"
Explanation :
Answer: A) 80 Explanation: Next number of the sequence 1, 4, 12, 32,... 1 = 2 x 20 4 = 2 x 21 12 = 3 x 22 32 = 4 x 23 80 = 5 x 24.
Q: A wheel that has 6 cogs is meshed with a larger wheel of 14 cogs. When the smaller wheel has made 21 revolutions, then the number of revolutions made by the larger wheel is ? 2045 05b5cc720e4d2b4197774f640
5b5cc720e4d2b4197774f640- 111false
- 27false
- 39true
- 413false
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Answer : 3. "9"
Explanation :
Answer: C) 9 Explanation: Here the number of cogs is inveresly proportional to number of revolutions => More cogs less revolution=> 6 : 14 :: x : 21=> (21x6)/14 = 9
Q: If N is the greatest number that will divide 1305, 4665 and 6905, leaving the same remainder in each case. What is the sum of the digits of N ? 2040 05b5cc731e4d2b4197774f7fb
5b5cc731e4d2b4197774f7fb- 16false
- 28false
- 34true
- 49false
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Answer : 3. "4"
Explanation :
Answer: C) 4 Explanation: N = H.C.F. of (4665 - 1305), (6905 - 4665) and (6905 - 1305) = H.C.F. of 3360, 2240 and 5600 = 1120. Sum of digits in N = ( 1 + 1 + 2 + 0 ) = 4