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Q:

A boat whose speed in still water is 9 kmph, goes 12 km downstream and comes back in 3 hrs. Find the speed of the stream?

A) 1 kmph	B) 3 kmph
C) 5 kmph	D) 4 kmph

Answer & Explanation Answer: B) 3 kmph

Explanation:

Let the speed of the stream = x kmph

From the given data,

$\frac{12}{9 + x} + \frac{12}{9 - x} = 3 h r s$

$3 x^{2} = 27$

=> x = 3 kmph

Therefore, the speed of the stream = 3 kmph

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Filed Under: Boats and Streams
Exam Prep: GATE , CAT , Bank Exams , AIEEE
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Q:

Which is NOT a good Web security strategy ?

A) Remove unnecessary compilers and interpreters	B) Add demo programs, so users can test system without accessing production data
C) Limit the users who can load software, edit or add files	D) Restrict access to the Web server keep a minimum number of ports open

Answer & Explanation Answer: A) Remove unnecessary compilers and interpreters

Explanation:

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Filed Under: Computer
Exam Prep: Bank Exams , CAT
Job Role: Bank Clerk , Bank PO

Q:

Four person A, B, C and D. The sum of their present age is 176. Four years ago ratio of their age was 11: 9 : 6 : 14, then find who is eldest and youngest among them ?

A) A is eldest & C is youngest	B) D is eldest & C is youngest
C) C is eldest & A is youngest	D) A is eldest & B is youngest

Answer & Explanation Answer: B) D is eldest & C is youngest

Explanation:

Given sum of present ages of A, B, C & D

A + B + C + D = 176

and also given that,

(A-4) : (B-4) : (C-4) : (D-4) = 11 : 9 : 6 : 14

Let the ratio = x

=> A-4 + B-4 + C-4 + D-4 = 11x + 9x + 6x + 14x

=> (A + B + C + D ) - 16 = 40x

=> 176 - 16 = 40x

=> x = 4

=> A = 44 + 4 = 48

=> B = 40

=> C = 28

=> D = 60

Therefore, from the above conclusions

D is eldest with 60 years and C is youngest with 28 years of ages.

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Filed Under: Problems on Ages
Exam Prep: AIEEE , Bank Exams , CAT , GATE
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Q:

At an examination in which maximum marks are 500. P got 10% less than Q, Q got 25% more than R and R got 20% less than S. If P got 360 marks what percentage of marks was obtained by S ?

A) 77	B) 74
C) 80	D) 83

Answer & Explanation Answer: C) 80

Explanation:

Let marks obtained by S = M

R's marks = 0.80M

Q's marks = 1.25 (0.80M)

P's marks = (0.90) (1.25) (0.80M)

= 0.9M

But 0.9M = 360

M = ?

M = 400

Hence % of marks obtained by S

= 400/500 x 100 = 80%.

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Filed Under: Percentage
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Bank Clerk , Bank PO

Q:

Which Indian film has been selected as India's official entry in the Best Foreign Language Film category at Oscars 2018 ?

A) Bahubali	B) Bhoomi
C) Newton	D) Daddy

Answer & Explanation Answer: C) Newton

Explanation:

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Filed Under: Honours and Awards

Q:

Which state government has launched 'People First' mobile application for grievance redressal ?

A) Uttar Pradesh	B) Maharashtra
C) Gujarat	D) Andhra Pradesh

Answer & Explanation Answer: D) Andhra Pradesh

Explanation:

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Filed Under: Indian Politics
Exam Prep: Bank Exams , CAT
Job Role: Bank Clerk , Bank PO

Q:

______ was named by the Arabs as City of gold ?

A) Mumbai	B) Jaipur
C) Cooch Behar	D) Multan

Answer & Explanation Answer: D) Multan

Explanation:

Mumbai - City of Wealth

Jaipur - Pink City

Cooch Behar - City of Beauty

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Filed Under: Indian History
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Bank Clerk , Bank PO

Q:

Who had announced that democracy is a government " of the people, by the people and for the people " ?

A) Abraham Lincoln	B) George Washignton
C) Theodore Roosevelt	D) Winston Churchill

Answer & Explanation Answer: A) Abraham Lincoln

Explanation:

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Filed Under: Famous Personalities
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Bank Clerk , Bank PO

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