Aptitude Practice Question and Answer

Q: 3.2% of 500 × 2. 4% of ? = 312 1381 0

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    812.5
    Correct
    Wrong
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    829.75
    Correct
    Wrong
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    749.85
    Correct
    Wrong
  • 4
    799.5
    Correct
    Wrong
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Answer : 1. "812.5"
Explanation :

Answer: A) 812.5 Explanation: Given 3.2% of 500 × 2. 4% of ? = 312Then,3.2 x 500100 x 2.4 x ?100 = 31216 x 2.4x?100 = 3129.6 x ?25 = 3129.6 x ? = 7800? = 78009.6? = 812.5

Q: Compounding interest means interest accrues 1530 1

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    at variable rates throughout the term
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    Wrong
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    more quickly than simple interest
    Correct
    Wrong
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    more slowly than simple interest
    Correct
    Wrong
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    at the same rate as simple interest
    Correct
    Wrong
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Answer : 2. "more quickly than simple interest"
Explanation :

Answer: B) more quickly than simple interest Explanation: Compounding interest means interest accrues on the interest charged and the principal amount each period the interest is charged. Compound interest is calculated by multiplying the principal amount by one plus the annual interest rate raised to the number of compound periods minus one.The total initial amount of the loan is then subtracted from the resulting value. The formula for calculating compound interest is: [P (1 + i)n] – P = P [(1 + i)n – 1] (Where P = Principal, i = nominal annual interest rate in percentage terms, and n = number of compounding periods.) Take a three-year loan of Rs. 10,000 at an interest rate of 5% that compounds annually. What would be the amount of interest? In this case, it would be: Rs. 10,000 [(1 + 0.05)3] – 1 = 10,000 [1.157625 – 1] = Rs. 1,576.25.   How it grows ::

Q: A 200 m long train passes a motorcycler, running in the same direction at 12 km/hr, in 15 second and a jeep travelling in the same direction in 20 s. At what speed is the car travelling (length of both the motorcycler and jeep is negligible)? 2494 0

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    36 kmph
    Correct
    Wrong
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    32 kmph
    Correct
    Wrong
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    29 kmph
    Correct
    Wrong
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    24 kmph
    Correct
    Wrong
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Answer : 4. "24 kmph"
Explanation :

Answer: D) 24 kmph Explanation: Let the speed of the train be 'S' kmph From the given data, Distance = Length of train = D = 200 mts = 200 x 18/5 kms Time = 10 sec given speed of the motorcycler = 12 kmph Relative speed as they are moving in the same direction = (S - 12) kmph (S- 12) = 200 x 18515S - 12 = 48S = 60 kmph  Hence, the speed of the train = S = 60 kmph Now, Let the speed of the jeep be 'x' kmph 60 - x = 200 x 1852060 - x = 36x = 60 - 36x = 24 kmph   Therefore, the speed of the jeep = x = 24 kmph.

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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: 4632 और 20000 के बीच का अंतर कितनी संख्या है 2842 0

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    15368
    Correct
    Wrong
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    12652
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    Wrong
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    14562
    Correct
    Wrong
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    14965
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Answer : 1. "15368"
Explanation :

Answer: 15368 व्याख्या: बड़ी संख्या में से छोटी संख्या को घटाकर 4632 और 20000 के बीच का अंतर दिया जाता है। यहाँ बड़ी संख्या 20000 है छोटी संख्या ४६३२ है, अब 20000 20000 - 4632 = 15368  में से 4632 घटाना और परिणाम एक सम संख्या है। अत: 4632 और 20000 के बीच का अंतर 15368 है और यह एक सम संख्या है।

Q: सुनीता और प्रणिता की आयु क्रमशः 40 वर्ष और 60 वर्ष है। कितने वर्ष पूर्व उनकी आयु का अनुपात 3:5 था? 1462 0

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    10 years
    Correct
    Wrong
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    15 years
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    Wrong
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    18 years
    Correct
    Wrong
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    24 years
    Correct
    Wrong
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Answer : 1. "10 years"
Explanation :

Answer: A) 10 वर्ष व्याख्या: सुनीता और प्रणिता की आयु 40 वर्ष और 60 वर्ष है। माना 'm' वर्ष से पहले, उनकी आयु 3:5 ATQ के अनुपात में हो, 40-m60-m = 35 => 200 - 5m = 180 - 3m =>2m = 20 => m = 10 वर्ष।

Q:

निम्नलिखित में से कौन सा अंश सबसे बड़ा है?

1209 1

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    7/12
    Correct
    Wrong
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    9/16
    Correct
    Wrong
  • 3
    13/20
    Correct
    Wrong
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    32/80
    Correct
    Wrong
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Answer : 1. "7/12"
Explanation :

Answer: A) 7/12 स्पष्टीकरण: यहाँ यह बताने के लिए कि दिए गए विकल्पों में से कौन-सी भिन्न बड़ी है, वह भिन्न जिसमें समान हर वाला बड़ा अंश हो या समान अंश वाला छोटा हर। दिए गए विकल्पों में से बड़ी भिन्न ज्ञात करने के लिए, सभी हरों का LCM ज्ञात करके विकल्पों के लिए हरों को समान बनाएं। 7/12, 9/16, 13/20, 32/80 अब, 12, 16, 20, 80 = 240 का एलसीएम। फिर, 140/240, 135/240, 156/240, 96/240 यहां 156240> 140240 > 135240 > 96240=> 1320 > 712 > 916 > 3280 इसलिए, सबसे बड़ी भिन्न = 13/20।

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Answer : 2. "25%"

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