Quantitative Aptitude प्रश्न और उत्तर का अभ्यास करें
8प्र: A Woman’s downstream swimming rate is thrice of her upstream swimming rate. If she covers 12 km upstream in 2.5 hours, what distance she will cover in 5 hours downstream? 3197 05b5cc639e4d2b4197774ba82
5b5cc639e4d2b4197774ba82- 172 kmtrue
- 236 kmfalse
- 356 kmfalse
- 442 kmfalse
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उत्तर : 1. "72 km"
व्याख्या :
Answer: A) 72 km Explanation: Rate of her upstream = 12/2.5 = 4.8 km/hr Then, ATQ Rate of downstream = 4.8 x 3 = 14.4 km/hr Hence, the distance she covers downstream in 5 hrs = 14.4 x 5 = 72 kms.
प्र: राम,1/4 कार्य को 8 दिनों में तथा श्याम 2/4 कार्य को 6 दिनों में समाप्त करते हैं तथा नरेश 3/4 भाग काम 12 दिनों में करता है। तो तीनों मिलकर उस कार्य को कितने दिनों में समाप्त करेगा- 3186 15d147f2b9aeb0a08f1e6721a
5d147f2b9aeb0a08f1e6721a- 1\(6 {11 \over 17 }\)false
- 2\(5 {11 \over 17 }\)true
- 3\(8 {11 \over 17 }\)false
- 4\(7 {11 \over 17 }\)false
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उत्तर : 2. "\(5 {11 \over 17 }\)"
प्र: 260 मीटर लम्बी एक ट्रेन 120 मीटर लम्बी एक दीवार को 19 सैंकण्ड में पार करती है तो ट्रेन की चाल किमी/ प्रति घंटा में क्या होगी? 3182 15d15df2a7567c2609b568584
5d15df2a7567c2609b568584- 127false
- 249false
- 372true
- 470false
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उत्तर : 3. "72"
प्र: Find the next number in the given number series? 50, 51, 47, 56, 40, ? 3176 05b5cc669e4d2b4197774bf52
5b5cc669e4d2b4197774bf52- 158false
- 265true
- 376false
- 481false
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उत्तर : 2. "65"
व्याख्या :
Answer: B) 65 Explanation: The given number series is 50, 51, 47, 56, 40, ? 5050 + 12 = 5151 - 22 = 4747 + 32 = 5656 - 42 = 4040 + 52 = 65 Hence, the next number in the given number series is 65.
प्र: An industrial loom weaves 1.14 meters of cloth every second. Approximately, how much time will it take to weave 52 meters of cloth ? 3166 15b5cc783e4d2b41977750219
5b5cc783e4d2b41977750219- 129.32 secfalse
- 242.51 secfalse
- 339.25 secfalse
- 445.61 sectrue
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उत्तर : 4. "45.61 sec"
व्याख्या :
Answer: D) 45.61 sec Explanation: Given loom weaves 1.14 mts of cloth in one second then 52 mts of cloth can be weaved by loom in, 1.14 ----- 1 52.0 ------? ⇒521.14= 45.61 sec
प्र: On a ruler's tombstone, it is said that one sixth of his life was spent in childhood and one twelfth as a teenager. One seventh of his life passed between the time he became an adult and the time he married; five years later, his son was born. Alas, the son died four years before he did. He lived to be twice as old as his son did. How old did the ruler live to be ? 3166 05b5cc741e4d2b4197774f981
5b5cc741e4d2b4197774f981- 184 yearstrue
- 272 yearsfalse
- 382 yearsfalse
- 464 yearsfalse
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उत्तर : 1. "84 years"
व्याख्या :
Answer: A) 84 years Explanation: Let the age of ruler is x so that of son = x/2 (given)Now according to the given condition (x/6) + (x/12) + (x/7) + 5 + (x/2) + 4 = x=> x = 84
प्र: The ratio of male and female in a city is 7 : 8 respectively and percentage of children among male and female is 25 and 20 respectively. If number of adult females is 156800, what is the total population of the city? 3148 05b5cc6bee4d2b4197774d9c9
5b5cc6bee4d2b4197774d9c9- 14,12,480false
- 23,67,500true
- 35,44,700false
- 42,98,948false
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उत्तर : 2. "3,67,500"
व्याख्या :
Answer: B) 3,67,500 Explanation: Let the total population be 'p' Given ratio of male and female in a city is 7 : 8 In that percentage of children among male and female is 25% and 20% => Adults male and female % = 75% & 80% But given adult females is = 156800 => 80%(8p/15) = 156800 => 80 x 8p/15 x 100 = 156800 => p = 156800 x 15 x 100/80 x 8 => p = 367500 Therefore, the total population of the city = p = 367500
प्र: Suppose today is Friday, what day of the week will it be 65 days from now? 3144 05b5cc69be4d2b4197774c7de
5b5cc69be4d2b4197774c7de- 1Saturdayfalse
- 2Sundaytrue
- 3Fridayfalse
- 4Thursdayfalse
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उत्तर : 2. "Sunday"
व्याख्या :
Answer: B) Sunday Explanation: The day of the week repeats every 7 days. Given today is Friday. Again Friday is repeated on the 7th day, 14th,... on 7 multiple days. Hence, Friday is on the 63rd day, as 63 is multiple of 7. Now, the required day of the week on the 65th day is Sunday.