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Q:

A man’s average monthly expenditure for the first four months of the year was Rs. 231.25. For the next five months, the average monthly expenditure was Rs. 22.75 more than what it was during the first four months. If the person spent Rs. 605 in all during the remaining three months of the year, find what percentage of his annual income of Rs. 3500 did he save in the year?

A) 10%	B) 15%
C) 20%	D) 25%

Answer & Explanation Answer: C) 20%

Explanation:

A man's average monthly expenditure for the first four months of the year = Rs.231.25.
For four month = 231.25 * 4 = Rs. 925
For next five month he spend = 231.25 + 22.75 for one month.
In five month he spend = (231.25 + 22.75) X 5 = 1270
If the person spent Rs. 605 in all during the remaining three months of the year,
Total expense = 925+1270+605= 2800
Saving = 3500-2800 = 700
% saving = 700/3500 * 100 = 20%

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Filed Under: Percentage
Exam Prep: Bank Exams

Q:

If a/(a+b) = 15/21, what is (a+b)/(a-b) is equal to?

A) 13/9	B) 23/11
C) 14/5	D) 21/9

Answer & Explanation Answer: D) 21/9

Explanation:

a/(a + b) = 15/21 → a = 15, a + b = 21

→ b = 21– 15 = 6
⇒ a – b =15 – 6 = 9
⇒ (a + b)/(a – b) = 21/9

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Filed Under: Simplification
Exam Prep: Bank Exams

Q:

If a--b = 4 and ab = 45, find the value of $a^{3} - b^{3}$

A) 604	B) 370
C) 253	D) 199

Answer & Explanation Answer: A) 604

Explanation:

${(a - b)}^{2} = a^{2} + b^{2} - 2 ab \Rightarrow 16 = a^{2} + b^{2} - 90 \Rightarrow a^{2} + b^{2} = 106 a^{3} - b^{3} = (a - b) (a^{2} + b^{2} + ab) \Rightarrow a^{3} - b^{3} = 4 X (106 + 45) \Rightarrow a^{3} - b^{3} = 4 X 151 \Rightarrow a^{3} - b^{3} = 604$

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Filed Under: Simplification
Exam Prep: Bank Exams

Q:

The number whose square is equal to the difference of the squares of 37 and 23 is:-

A) 45.09	B) 28.98
C) 47.09	D) 28

Answer & Explanation Answer: B) 28.98

Explanation:

$37^{2} - 23^{2} = 840 Required number = \sqrt{840} = 28.98$

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Filed Under: Simplification
Exam Prep: Bank Exams

Q:

The official song ‘WakaWaka’ of FIFA World Cup held in the year 2010 at South Africa was sung by which popular singer?

A) Madonna	B) Destiny Child
C) Shakira	D) Rehanna

Answer & Explanation Answer: C) Shakira

Explanation:

"Waka Waka (This Time for Africa, is a song by Colombian singer Shakira was released on 7 May2010 by Epic Records as the official song of the 2010 FIFA World Cup, which was held in South Africa.

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Filed Under: Famous Personalities
Exam Prep: Bank Exams

Q:

In the following questions, one part of the sentence may have an error. Find out which part of the sentence has an error and click the button corresponding to it. If the sentence is free from error, click the "No error" option.
A. The trek is difficult
B. but it is far worth
C. the endeavour
D. No Error

A) A	B) B
C) C	D) D

Answer & Explanation Answer: B) B

Explanation:

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Filed Under: English
Exam Prep: Bank Exams

Q:

If a sum of money deposited in a bank at simple interest is doubled in 6 years, then after 12 years, the amount will be

A) 5/2times the original amount	B) 3times the original amount
C) 7/2times the original amount	D) 4times the original amount

Answer & Explanation Answer: B) 3times the original amount

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

Q:

If the sum of the digits of any integer between 100 and 1000 is subtracted from the same integer , the resulting number is always divisibleby

A) 2	B) 5
C) 6	D) 9

Answer & Explanation Answer: D) 9

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

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