CAT प्रश्न और उत्तर का अभ्यास करें

प्र: When 0.46 is written in simplest form, the sum of the numerator and the denominator is  ? 2116 0

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    69
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    73
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    96
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  • 4
    41
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उत्तर : 2. "73"
व्याख्या :

Answer: B) 73 Explanation: 0.46 = 46/100 = 23/50. Sum of the numerator and denominator is 23 + 50 = 73

प्र: 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  ? 1691 0

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    9 days
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    11 days
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    13 days
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  • 4
    15 days
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उत्तर : 3. "13 days"
व्याख्या :

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.

प्र: The second day of a month is Sunday, What will be the last day of the next month which has 31 days  ? 6951 0

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    Friday
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    Saturday
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    Sunday
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    Can't be determined
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उत्तर : 4. "Can't be determined"
व्याख्या :

Answer: D) Can't be determined Explanation: We cannot find out the answer because the number of days of the current month is not given.

प्र: Vishal and Raghu jointly started a business. Vishal invested three times as Raghu did and invested his money for double time as compared to Raghu. Raghu earned Rs. 4000. If the gain is proportional to the money invested and the time for which the money is invested then the total gain was  ? 1780 0

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    Rs. 28,000
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    Rs. 18,000
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    Rs. 14,000
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  • 4
    Rs. 8,000
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उत्तर : 1. "Rs. 28,000"
व्याख्या :

Answer: A) Rs. 28,000 Explanation: Investments ratio is = 3:1Time period ratio is = 2:1 As they are proportional to gain ------Gain ratio of Vishal and raghu = 6:1 But given Raghu got Rs. 4000,  =? 1 ----- 4000     7 -----    ? => Rs.28,000 The total gain = Rs.28,000

प्र: India has been placed in the _______ spot in the renewable energy country attractiveness index by EY. 1586 0

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    1st
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  • 2
    2nd
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    3rd
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    4th
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उत्तर : 2. "2nd"
व्याख्या :

Answer: B) 2nd Explanation: India has been placed in the second spot in the renewable energy country attractiveness index by EY. The UK accountancy firm noted the fast pace of growth in Indian renewable energy in the past three years. Over 10 gigawatt (Gw) of solar power was added between 2015 and 2017 and wind energy capacity grew to 5.4 Gw in 2017-18. This growth is in the context of the government’s ambitious targets — 175 Gw of renewables by 2022, with 40 per cent installed capacity from renewables by 2030 — and the dramatic price falls in photovoltaic technology.

प्र: The profit earned by selling an article for Rs. 832 is equal to the loss incurred when the same article is sold for Rs. 448. What should be the sale price for making 50% profit ? 1702 0

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    Rs. 660
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    Rs. 560
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    Rs. 1060
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  • 4
    Rs. 960
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उत्तर : 4. "Rs. 960"
व्याख्या :

Answer: D) Rs. 960 Explanation: Let C.P. = Rs. C. Then, 832 - C = C - 4482C = 1280 => C = 640Required S.P. = 150% of Rs. 640 = 150/100 x 640 = Rs. 960.

प्र: 10 boys can complete a work in 7 days and 10 girls take 14 days to complete the work. How many days will 5 boys and 10 girls take to complete the work ? 1254 0

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    13 days
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    10 days
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    7 days
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    16 days
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उत्तर : 3. "7 days"
व्याख्या :

Answer: C) 7 days Explanation: 1 boy's 1 day work = 1/70 1 girl's 1 day work = 1/140 (5 boys + 10 girls)'s 1 day work = (5/70 + 10/140) = (1/14 + 1/14) = 1/7   5 boys and 10 girls will complete the work in 7 days.

प्र: The compound interest earned by Sunil on a certain amount at the end of two years at the rate of 8% p.a. was Rs.2828.80. Find the total amount that Sunil got back at the end of two years in the form of principal plus interest earned  ? 2175 0

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    Rs. 11828.80
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    Rs. 19828.80
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    Rs. 9828.80
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  • 4
    Rs. 19328.80
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उत्तर : 2. "Rs. 19828.80"
व्याख्या :

Answer: B) Rs. 19828.80 Explanation: Let the sum be Rs. P P{ 1+81002- 1 } = 2828.80   It is in the form of  a2-b2 = a+ba-b   P(8/100)(2 + 8/100) = 2828.80   P = 2828.80 / (0.08)(2.08)   = 1360/0.08 = 17000   Principal + Interest = Rs. 19828.80

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