Quantitative Aptitude प्रश्न और उत्तर का अभ्यास करें

प्र: In a certain Business, the profit is 220% of the cost. If the cost increases by 25% but the selling price remains constant, approximately what percentage of the selling price is the profit ? 1857 0

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    61%
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  • 2
    75%
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  • 3
    55%
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  • 4
    81%
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उत्तर : 1. "61%"
व्याख्या :

Answer: A) 61% Explanation: Let C.P.= Rs. 100. Then, Profit = Rs.220,  S.P. = Rs.320.   New C.P. = 125% of Rs. 100 = Rs. 125  New S.P. = Rs.320. Profit = Rs. (320 - 125) = Rs. 195   Required percentage = 195320×100== 60.9 =~ 61%

प्र: Mr. Karthik drives to work at an average speed of 48 km/hr. Time taken to cover the first 60% of the distance is 20 minutes more than the time taken to cover the remaining distance. Then how far is his office ? 1856 0

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    40 km
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  • 2
    50 km
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  • 3
    70 km
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  • 4
    80 km
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उत्तर : 4. "80 km"
व्याख्या :

Answer: D) 80 km Explanation: Let the total distance be 'x' km. Time taken to cover remaining 40% of x distance is   t1=40×x100×48 But given time taken to cover first 60% of x distance is   t2=t1+2060hrs  t2=60×x100×48 ∴60×x100×48= 40×x100×48+2060  x=80 km.

प्र: The ratio of speeds of a car, a train and a bus is 5:9:4. The average speed of the car, the bus and the train is 72 km/hr together. What is the average speed of the car and the train together ? 1855 0

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    84 km/hr
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  • 2
    96 km/hr
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    72 km/hr
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  • 4
    60 km/hr
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उत्तर : 1. "84 km/hr"
व्याख्या :

Answer: A) 84 km/hr Explanation: Let the speeds of the car, train and bus be 5x, 9x and 4x km/hr respectively.Average speed = 5x + 9x + 4x/3 = 18x /3 = 6x km/hr.Also, 6x = 72 => x = 12 km/hrTherefore, the average speed of the car and train together is = 5x+9x2= 7x = 7 x 12 = 84 km/hr.

प्र: Twelve percent of Kalyan's monthly salary is equal to the sixteen per cent of Nandu's monthly salary. Sarnesh's monthly salary is half that of Nandu's monthly salary. If sarnesh's annual salary is Rs. 1.08 lacs, What is Kalyan's monthly salary ? 1850 0

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    15,000
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  • 2
    36,000
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  • 3
    24,000
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  • 4
    12,500
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उत्तर : 3. "24,000"
व्याख्या :

Answer: C) 24,000 Explanation: Let K = Kalyan's monthly salaryN = Nandu's monthly salaryS = Sarnesh's monthly salary.Then from given data, 12% of K = 16% of NS = N/2 => N = 2SK = 16/12 x N = 16/12 x 2S= 16/6 x 1.08/12 = 16/6 x 0.09 = 0.24 lacs = 24,000

प्र: A train covers 180 km distance in 5 hours. Another train covers the same distance in 1 hour less. What is the difference in the distances covered by these trains in one hour if they are moving in the same direction? 1850 0

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    15 kms
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  • 2
    9 kms
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  • 3
    6 kms
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  • 4
    18 kms
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उत्तर : 2. "9 kms"
व्याख्या :

Answer: B) 9 kms Explanation: The first train covers 180 kms in 5 hrs => Speed = 180/5 = 36 kmph Now the second train covers the same distance in 1 hour less than the first train => 4 hrs => Speed of the second train = 180/4 = 45 kmph Now, required difference in distance in 1 hour = 45 - 36 = 9 kms.

प्र: A man can row upstream at 16 km/hr and downstream at 24 km/hr. Find the speed of the current. 1846 0

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    4 kmph
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  • 2
    6 kmph
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  • 3
    5 kmph
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  • 4
    3 kmph
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उत्तर : 1. "4 kmph"
व्याख्या :

Answer: A) 4 kmph Explanation: Speed of the current = 24-16/2 = 8/2 = 4 km/hr.

प्र: If a trader sold two cars each at Rs. 404415 and gains 15% on the first and loses 15% on the second, then his profit or loss percent on the whole is ? 1846 0

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    1.44 %
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  • 2
    2.02 %
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  • 3
    1.04 %
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  • 4
    2.25 %
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उत्तर : 4. "2.25 %"
व्याख्या :

Answer: D) 2.25 % Explanation: SP of each car is Rs. 404415, he gains 15% on first car and losses 15% on second car. In this case, there will be loss and percentage of loss is given by = [(profit%)(loss%)]/100 = (15)(15)/100 % = 2.25%

प्र: Salaries of Karthik, Arun and Akhil were in the ratio 4 : 5 : 6 respectively. If their salaries were increased by 50 per cent, 60 per cent and 50 per cent respectively, what will be the new ratio of the salaries of Akhil, Arun and Karthik ? 1844 0

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    6 : 8 : 9
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  • 2
    8 : 6 : 9
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  • 3
    9 : 8 : 6
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  • 4
    6 : 5 : 4
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उत्तर : 3. "9 : 8 : 6"
व्याख्या :

Answer: C) 9 : 8 : 6 Explanation: Given the salaries are in the ratio of 4 : 5 : 6   Now the salaries are increased by 50%, 60% and 50% respectively   The New ratio of salaries will be   4 x (150/100) : 5 x (160/100) : 6 x (150/100)   = 6 : 8 : 9   The new ratio of salaries of Akhil, Arun and Karthik is 9 : 8 : 6

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