Quantitative Aptitude प्रश्न और उत्तर का अभ्यास करें
8प्र: 4 men can repair a road in 7 hours. How many men are required to repair the road in 2 hours ? 10232 05b5cc718e4d2b4197774f4ef
5b5cc718e4d2b4197774f4ef- 117 menfalse
- 214 mentrue
- 313 menfalse
- 416 menfalse
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उत्तर : 2. "14 men"
व्याख्या :
Answer: B) 14 men Explanation: M x T / W = Constantwhere, M= Men (no. of men)T= Time takenW= Work loadSo, here we applyM1 x T1/ W1 = M2 x T2 / W2Given that, M1 = 4 men, T1 = 7 hours ; T2 = 2 hours, we have to find M2 =?Note that here, W1 = W2 = 1 road, ie. equal work load.Clearly, substituting in the above equation we get, M2 = 14 men.
प्र: Two bike riders ride in opposite directions around a circular track, starting at the same time from the same point. Biker A rides at a speed of 16 kmph and biker B rides at a speed of 14 kmph. If the track has a diameter of 40 km, after how much time (in hours) will the two bikers meet? 9914 15b5cc77fe4d2b4197775016a
5b5cc77fe4d2b4197775016a- 16.52false
- 28.14false
- 34.18true
- 45.02false
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उत्तर : 3. "4.18"
व्याख्या :
Answer: C) 4.18 Explanation: Distance to be covered = πD = 40π km Relative speed of bikers = 16 + 14 = 30 kmph. Now, time=distancespeed = 40π30 = 4.18 hrs.
प्र: A and B began business with Rs.3000 and Rs.4000 after 8 months, A withdraws Rs.1000 and B advances Rs.1000 more. At the end of the year, their profits amounted to Rs.630 find the share of A ? 9551 05b5cc6e9e4d2b4197774edfc
5b5cc6e9e4d2b4197774edfc- 1Rs. 240true
- 2Rs. 75false
- 3Rs. 125false
- 4Rs. 354false
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उत्तर : 1. "Rs. 240"
व्याख्या :
Answer: A) Rs. 240 Explanation: The ratio of A & B investments = (3x8 + 2x4):(4x8 + 5x4) => 8:13 => 8/21 x 630 = 240.
प्र: Two pipes A and B can fill a tank in 24 hours and 1717 hours respectively. Harihar opened the pipes A and B to fill an empty tank and some times later he closed the taps A and B , when the tank was supposed to be full. After that it was found that the tank was emptied in 2.5 hours because an outlet pipe "C" connected to the tank was open from the beginning. If Harihar closed the pipe C instead of closing pipes A and B the remaining tank would have been filled in : 9463 05b5cc7cfe4d2b419777511cc
5b5cc7cfe4d2b419777511cc- 12 hoursfalse
- 28 hourstrue
- 36 hoursfalse
- 44 hoursfalse
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उत्तर : 2. "8 hours"
व्याख्या :
Answer: B) 8 hours Explanation: Efficiency of Inlet pipe A = 4.16% 10024 Efficiency of Inlet pipe B = 5.83% 1001717 Therefore, Efficiency of A and B together = 100 % Now, if the efficiency of outlet pipe be x% then in 10 hours the capacity of tank which will be filled = 10 * (10 - x) Now, since this amount of water is being emptied by 'C' at x% per hour, then 10x10-xx=2.5 hrs => x = 8 Therefore, in 10 hours 20% tank is filled only. Hence, the remaining 80% of the capacity will be filled by pipes A and B in 80/10 = 8 hours
प्र: What is the right most integer of the expression 65776759 + 54697467 ? 9159 05b5cc731e4d2b4197774f81e
5b5cc731e4d2b4197774f81e- 14false
- 26false
- 39true
- 40false
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उत्तर : 3. "9"
व्याख्या :
Answer: C) 9 Explanation: Last digit for the power of 6 is 6 (always) Power cycle of 7 is 7, 9, 3, 1. Now 467/4 gives a remainder of 3 Then the last digit is 73 = 3 Last digit is 6 + 3 = 9.
प्र: 9 men and 12 boys finish a job in 12 days, 12 men and 12 boys finish it in 10 days. 10 men and 10 boys shall finish it in how many days ? 8915 05b5cc6e5e4d2b4197774ed33
5b5cc6e5e4d2b4197774ed33- 115 daysfalse
- 211 daysfalse
- 314 daysfalse
- 412 daystrue
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उत्तर : 4. "12 days"
व्याख्या :
Answer: D) 12 days Explanation: 9M + 12B ----- 12 days ...........(1)12M + 12B ------- 10 days........(2)10M + 10B -------?108M + 144B = 120M +120B24B = 12M => 1M = 2B............(3) From (1) & (3) 18B + 12B = 30B ---- 12 days 20B + 10B = 30B -----? => 12 days.
प्र: In a pot, there is a mixture of milk and water in the ratio 4 : 5. If it is filled with an additional 8 litres of milk, the pot would be full and ratio of milk and water would become 6 : 5. Find the capacity of the pot ? 8713 05b5cc6d6e4d2b4197774e66f
5b5cc6d6e4d2b4197774e66f- 111 litfalse
- 222 littrue
- 333 litfalse
- 444 litfalse
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उत्तर : 2. "22 lit"
व्याख्या :
Answer: B) 22 lit Explanation: Let the capacity of the pot be 'P' litres.Quantity of milk in the mixture before adding milk = 4/9 (P - 8)After adding milk, quantity of milk in the mixture = 6/11 P.6P/11 - 8 = 4/9(P - 8)10P = 792 - 352 => P = 44. The capacity of the pot is 44 liters.
प्र: दी गई संख्या श्रंखला में गलत संख्या ज्ञात कीजिए? 10, 21, 54, 109, 189 8460 05b5cc607e4d2b4197774b553
5b5cc607e4d2b4197774b553- 1189true
- 2109false
- 354false
- 421false
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उत्तर : 1. "189"
व्याख्या :
Answer: A) 189 स्पष्टीकरण: दी गई संख्या श्रृंखला 10, 21, 54, 109, 189 है श्रृंखला एक पैटर्न का अनुसरण करती है कि 10 + 11 = 21 21 + 33 = 54 54 + 55 = 109 109 + 77 = 186 इसलिए दिए गए में गलत संख्या संख्या श्रृंखला 189 है।