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Q:

A man goes down stream with a boat to some destination and returns upstream to his original place in 5 hours. If the speed of the boat in still water and the strean are 10km/hr and 14km/hr respectively, the distance of the destination from the string place is

A) 16 km	B) 18 km
C) 21 km	D) 25 km

Answer & Explanation Answer: C) 21 km

Explanation:

Let the distance covered be D km.

$\frac{D}{10 + 4} + \frac{D}{10 - 4} = 5$

$\frac{D}{14} + \frac{D}{6} = 5$

10D = 42 x 5 = 210

=> D = 21 km

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Filed Under: Boats and Streams
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Bank Clerk , Bank PO

Q:

Panchayatiraj form of rural government was first adopted by

A) Rajasthan & Madhya Pradesh	B) Rajasthan & West Bengal
C) Rajasthan & Andhra Pradesh	D) Rajasthan & Uttar Pradesh

Answer & Explanation Answer: C) Rajasthan & Andhra Pradesh

Explanation:

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Filed Under: General Awareness

Q:

Give example scenarios when an application goes into InActive state?

Answer

An app can get into InActive state when the user locks the screen or the system prompts the user to respond to some event e.g. SMS message, incoming call etc.

Workspace

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Subject: IOS

Q:

How would you go about increasing the buffer cache hit ratio?

Answer

Use the buffer cache advisory over a given workload and then query the v$db_cache_advice table. If a change was necessary then I would use the alter system set db_cache_size command.

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Subject: Database Administration

Q:

In an NGO the daily average wages of 20 illiterate employees is decreased from Rs.25 to Rs.10, thus the average salary of all the literate and illiterate employees is decreased Rs.10 per day. The No. of educated employees working in the NGO is :

A) 15	B) 20
C) 10	D) Data Insufficient

Answer & Explanation Answer: C) 10

Explanation:

Total employees = $\frac{(25 - 10) \times 20}{10} = 30$

Hence number of educated employees = 30-20 = 10

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Filed Under: Average

Q:

8 years ago there were 5 members in the Arthur's family and then the average age of the family was 36 years. Mean while Arthur got married and gave birth to a child. Still the average age of his family is same now. What is the age of his wife at the time of his child's birth was.If the difference between the age of her child and herself was 26 years.

A) 25 years	B) 26 years
C) 20 years	D) can't be determined

Answer & Explanation Answer: B) 26 years

Explanation:

Since we know that the difference b/w the age of any two persons remains always constant, while the ratio of their ages gets changed as the time changes.

so, if the age of his child be x (presently)

Then the age of wife be x + 26 (presently)

Thus the total age = x + ( x + 26) = 32 [ $∵$ 252-220 =32]

=> x = 3

Therefore, The age of her child is 3 years and her self is 29 years. Hence her age at the time of the birth of her child was 26 years.

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Filed Under: Average

Q:

Alloy A contains 40% gold and 60% silver. Alloy B contains 35% gold and 40% silver and 25% copper. Alloys A and B are mixed in the ratio of 1:4 .What is the ratio of gold and silver in the newly formed alloy is?

A) 20% and 30%	B) 36% and 44%
C) 25% and 35%	D) 49% and 36%

Answer & Explanation Answer: B) 36% and 44%

Explanation:

Assume the weight of alloy a is 100 kg

Therefore, The weight of alloy B is 400kg

Gold silver copper

A 40kg 60kg 0kg

B 140kg 160kg 100kg

total 180kg 220kg 100kg

Therefore, Ratio of gold and silver in new alloy = $\frac{180}{500} : \frac{200}{500}$ = 36% :44%

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Filed Under: Ratios and Proportions

Q:

Goa Shipyard Limited (GSL) was established in

A) 1955	B) 1956
C) 1957	D) 1958

Answer & Explanation Answer: C) 1957

Explanation:

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Filed Under: General Awareness

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