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Anonymous
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Anonymous
Asked: August 8, 2021Category: Aptitude and Reasoning

The ratio between two numbers is 3:4 and their sum is 420. The greater of two number is ?

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  1. Basanta Kumar Professional
    Added an answer on August 8, 2021 at 4:16 pm

    Correct Option: C Let the number be 3N and 4N. Then, 3N + 4N = 420 ⇒ 7N = 420 ⇒ N = 60 ∴ Greater number = 4 x 60 = 240

    Correct Option: C

    Let the number be 3N and 4N.
    Then, 3N + 4N = 420
    ⇒ 7N = 420
    ⇒ N = 60
    ∴ Greater number = 4 x 60 = 240

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Anonymous
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Anonymous
Asked: August 6, 2021Category: Aptitude and Reasoning

List price of an article at a show room is Rs.2,000 and it is being sold at successive discounts of 20% and 10%, its net selling price will be:

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  1. DEEPAK KUMAR Professional
    Added an answer on August 6, 2021 at 5:30 pm

    Correct Answer: Rs.1440 L.P. of an article = Rs. 2,000 After Discount, S.P. =  2000×80/100×90/100 = Rs.1440

    Correct Answer: Rs.1440

    L.P. of an article = Rs. 2,000

    After Discount, S.P. = 

    2000×80/100×90/100

    = Rs.1440

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Anonymous
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Anonymous
Asked: July 24, 2021Category: Quantitative Aptitude - Arithmetic Ability

A person goes to his office at 1/3rd of the speed at which he returns from his office. If the average speed during the whole trip is 12 m /h . what is the speed of the person while he was going to his office?

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  1. Mighty Ashish Guru
    Added an answer on July 24, 2021 at 7:23 pm

    Solution: u = k , v= 3k ∴2uv/u+v ⇒2×k×3k/(k+3k)=12 => k = 8km/h

    Solution:

    u = k , v= 3k

    ∴2uv/u+v ⇒2×k×3k/(k+3k)=12

    => k = 8km/h

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Anonymous
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Anonymous
Asked: July 14, 2021Category: Quantitative Aptitude - Arithmetic Ability

What happens to the volume (V) of the cuboid. if its length is doubled. height is doubled and breadth is kept the same?

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  1. Mighty Ashish Guru
    Added an answer on July 14, 2021 at 8:43 pm

    4V is the volume of the cuboid. Let the initial length, breadth and height of the cuboid be l, b and h respectively. ∴ Volume of the cuboid (V) = lbh After making changes, new length = 2l New breadth = b New height = 2h ∴ New volume of the cuboid = 2l × b × 2h = 4lbh ∴ New volume of the cuboid = 4VRead more

    4V is the volume of the cuboid. Let the initial length, breadth and height of the cuboid be l, b and h respectively.

    ∴ Volume of the cuboid (V) = lbh

    After making changes, new length = 2l

    New breadth = b

    New height = 2h

    ∴ New volume of the cuboid = 2l × b × 2h = 4lbh

    ∴ New volume of the cuboid = 4V

     

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Anonymous
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Anonymous
Asked: August 29, 2021Category: Quantitative Aptitude - Arithmetic Ability

8 litres are drawn from a cask full of wine and is then filled with water. This operation is performed three more times. The ratio of the quantity of wine now left in cask to that of the water is 16 : 65. How much wine the cask hold originally?

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  1. Mighty Ashish Guru
    Added an answer on August 29, 2021 at 5:49 pm

    Explanation: Let the quantity of the wine in the cask originally be x litres Then, quantity of wine left in cask after 4 operations =[x(1−8/x)⁴]litres ∴[x(1−8x)⁴/x] = 16/81 ⇒[1−8/x]⁴=(2/3)⁴ ⇒x=24

    Explanation:

    Let the quantity of the wine in the cask originally be x litres

    Then, quantity of wine left in cask after 4 operations =[x(1−8/x)⁴]litres

    ∴[x(1−8x)⁴/x] = 16/81

    ⇒[1−8/x]⁴=(2/3)⁴

    ⇒x=24

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aalan
Anonymous
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Anonymous
Asked: August 27, 2021Category: Quantitative Aptitude - Arithmetic Ability

If 2 tables and 3 chairs cost Rs, 3500 and 3 tables and 2 chairs cost Rs. 4000, then how much does a table cost ?

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  1. Mighty Ashish Guru
    Added an answer on August 27, 2021 at 1:11 pm

    Explanation: Let the cost of a table and that of a chair be Rs. x and Rs, y respectively. Then, 2x + 3y = 3500 ...(i) and 3x + 2y = 4000 .....(ii) solving (i) and (ii) we get x = 1000, y = 500

    Explanation:

    Let the cost of a table and that of a chair be Rs. x and Rs, y respectively.

    Then, 2x + 3y = 3500 …(i)

    and 3x + 2y = 4000 …..(ii)

    solving (i) and (ii) we get x = 1000, y = 500

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Anonymous
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Anonymous
Asked: July 22, 2021Category: Aptitude and Reasoning

18^3.5÷27^3.5×6^3.5=2^?

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  1. ANURAG RAKESH Guru
    Added an answer on July 22, 2021 at 4:08 pm

    Correct Answer: 7 183.5÷273.5×63.5=2?183.5÷273.5×63.5=2? (1827×6)3.5=2?=(4)3.5=2?(1827×6)3.5=2?=(4)3.5=2? [adinserter block="7"] (22)3.5=2?=>(2)7.0=27=>?=7

    Correct Answer: 7

    183.5÷273.5×63.5=2?183.5÷273.5×63.5=2?

    (1827×6)3.5=2?=(4)3.5=2?(1827×6)3.5=2?=(4)3.5=2?

    (22)3.5=2?=>(2)7.0=27=>?=7

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Anonymous
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Anonymous
Asked: July 26, 2021Category: Quantitative Aptitude - Arithmetic Ability

In the following number series only one number is wrong. Find out the wrong number ? 6, 15, 35, 63, 143, 221, 323

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  1. Mighty Ashish Guru
    Added an answer on July 26, 2021 at 10:11 pm

    Explanation: Here the series follows the pattern that, product of succesive prime numbers i.e, 2 × 3 = 6 3 × 5 = 15 5 × 7 = 35 7 × 11 = 77 11 × 13 = 143 13 × 17 = 221 17 × 19 = 323 So here in place of 77 the number 63 is written. So the wrong number is 63.

    Explanation:

    Here the series follows the pattern that, product of succesive prime numbers i.e,

    2 × 3 = 6

    3 × 5 = 15

    5 × 7 = 35

    7 × 11 = 77

    11 × 13 = 143

    13 × 17 = 221

    17 × 19 = 323

    So here in place of 77 the number 63 is written.

    So the wrong number is 63.

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Anonymous
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Anonymous
Asked: July 29, 2021Category: Quantitative Aptitude - Arithmetic Ability

What comes next in this sequence 196, 169, 144, 121, 100, 81, ?

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  1. Mighty Ashish Guru
    Added an answer on July 29, 2021 at 4:53 pm

    Explanation: The given number series follows a pattern that 196, 169, 144, 121, 100, 81, ? -27 -25 -23 -21 -19 -17 => 81 - 17 = 64 Therefore, the series is 196, 169, 144, 121, 100, 81, 64.

    Explanation:

    The given number series follows a pattern that

    196, 169, 144, 121, 100, 81, ?

    -27 -25 -23 -21 -19 -17

    => 81 – 17 = 64

    Therefore, the series is 196, 169, 144, 121, 100, 81, 64.

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Anonymous
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Anonymous
Asked: August 7, 2021Category: Aptitude and Reasoning

A book is listed at Rs. 1,400 and the discount offered is 10%. What additional discount must be given to bring the net selling price to Rs.1,200 ?

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  1. DEEPAK KUMAR Professional
    Added an answer on August 7, 2021 at 4:23 pm

    Correct Answer: 4162141621 L.P. = Rs. 1400 After Ist Discount = 90/100×1400 = Rs. 1260 S.P. = Rs. 1200 [adinserter block="7"] Additional Discount % = 1260−1200/1260×100 = 10021

    Correct Answer: 4162141621

    L.P. = Rs. 1400

    After Ist Discount = 90/100×1400

    = Rs. 1260

    S.P. = Rs. 1200

    Additional Discount % = 1260−1200/1260×100

    = 10021

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