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Q:

Two numbers are 20% and 30% less than the third number . How much percent is the second number less than first?

Answer

Let the third number be 100.

Then, the first number = 100 - 20 = 80 and second number = 100 - 30 = 70.

Difference between the first and second number = 80-70 = 10

$\inline \therefore$ Required percentage = $\frac{10}{80} x 100$ % = 100/8 = 12.5%

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Subject: Percentage Exam Prep: Bank Exams

Q:

Subbu purchased a tape recorder at 9/10 of its selling price and sold it at 8% more than its selling price. His gain is

Answer

Let S.P = x then C.P = $\inline \frac{9x}{10}$

Selling price received by subbu = (108% of x)

= $\inline \frac{108}{100}x=\frac{27}{25}x$

Gain= $\inline (\frac{27}{25}x-\frac{9}{10}x)=\frac{9}{50}x$

Hence gain% = $\inline (\frac{9x}{50}\times \frac{10}{9x}\times 100)$ = 20%

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Subject: Percentage

Q:

Two pipes A and B can fill a cistern in 4 minutes and 6 minutes respectively . If these pipes are turned on alternately for 1 minute each how long will it take to the cistern to fill?

Answer

As the pipes are operating alternatively, thus their 2 minutes job is = $\frac{1}{4} + \frac{1}{6} = \frac{5}{12}$

In the next 2 minutes the pipes can fill another $\frac{5}{12}$ part of cistern.

Therefore, In 4 minutes the two pipes which are operating alternatively will fill $\frac{5}{12} + \frac{5}{12} = \frac{5}{6}$ Remaining part = $1 - \frac{5}{6} = \frac{1}{6}$

Pipe A can fill $\frac{1}{4}$ of the cistern in 1 minute

Pipe A can fill $\frac{1}{6}$ of the cistern in = $\frac{2}{3}$ min

Therefore, Total time taken to fill the Cistern

4 + $\frac{2}{3}$ minutes.

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Subject: Time and Work Exam Prep: CAT , Bank Exams , AIEEE
Job Role: Bank PO , Bank Clerk

Q:

A contractor undertakes to complete a work in 130 days. He employs 150 men for 25 days and they complete 1/4 of the work . He then reduces the number of men to 100, who work for 60 days, after which there are 10 days holidays.How many men must be employed for the remaining period to finish the work?

Answer

150 men in 25 days do = $\frac{1}{4}$ work

Let 1 man in 1 day does = x work

Total work done by 150 men in 25 days = 150x * 25 = $\frac{1}{4}$ work => x = $\frac{1}{15000}$

Therefore, 100 men in 60 days do = 100 * 60x = 6000x work = 6/15 = 2/5

Total work done = $\frac{1}{4} + \frac{2}{5} = \frac{13}{20}$

Therefore, Remaining work = 1 - $\frac{13}{20}$ = $\frac{7}{20}$

Remaining time = 130 - (25+60+10) = 35 days

Therefore, work is done in 25 days by 150 men.

Therefore, Work is done in 35 days by 150 men.

Hence, he should employ 50 more men.

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Subject: Time and Work Exam Prep: Bank Exams , AIEEE
Job Role: Bank PO

Q:

With which of the following is the term Liberty, Equality and Fraternity associated?

A) Industrial Revolution	B) Russian Revolution
C) French Revolution	D) Olympic Games

Answer & Explanation Answer: C) French Revolution

Explanation:

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Filed Under: World History

Q:

Buckingham palace became the official royal residence during the reign of which British monarch?

A) Queen Victoria	B) King George III
C) King Henry VIII	D) King George V

Answer & Explanation Answer: A) Queen Victoria

Explanation:

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Filed Under: World History

Q:

The First battle of which war was the Battle of Alma?

A) Creek war	B) Crimean war
C) Korean war	D) Chinese war

Answer & Explanation Answer: B) Crimean war

Explanation:

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Filed Under: World History

Q:

Which country has always remained free from foreign rule?

A) Phillipines	B) Nepal
C) USA	D) Laos

Answer & Explanation Answer: B) Nepal

Explanation:

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Filed Under: World History

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