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Q:

20% of a man's salary is paid as rent, 60% are his living expenses and 10% are his savings. If he spends remaining 30 on the education of his children, find his salary

A) 300	B) 900
C) 3000	D) 9000

Answer & Explanation Answer: A) 300

Explanation:

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Filed Under: Percentage
Exam Prep: Bank Exams

Q:

If x = 1 + √2 + √3, then the value of $x^{2} - 2 x - 4 = 0$

A) √6	B) 2√3
C) 3√2	D) 2√6

Answer & Explanation Answer: D) 2√6

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

Q:

If $\frac{a + b}{\sqrt{ab}} = \frac{2}{1}$ , then the value of (a-b) is

A) 1	B) 0
C) -1	D) 2

Answer & Explanation Answer: B) 0

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

Q:

If ΔABC is an equilateral triangle of side 16 cm, then the length of altitude is

A) 2√3 cm	B) 4√3 cm
C) 8√3 cm	D) 5√3 cm

Answer & Explanation Answer: C) 8√3 cm

Explanation:

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Filed Under: Volume and Surface Area
Exam Prep: Bank Exams

Q:

Simplify : $\frac{69 X 69 X 69 - 65 X 65 X 6}{69 X 69 + 69 X 65 + 65 X 65}$

A) 1	B) 4
C) 0.216	D) 0.164

Answer & Explanation Answer: B) 4

Explanation:

69 –65 = 4

69

–

65 = 4

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Filed Under: Simplification
Exam Prep: Bank Exams

Q:

If a person repaid Rs. 22500 after 10 years of borrowing a loan, at 10% per annum simple interest find out what amount did he take as a loan?

A) 11,225	B) 11,250
C) 10,000	D) 7,500

Answer & Explanation Answer: B) 11,250

Explanation:

SI = PTR/100

SI = PX100/100

SI = P

So, Amount=P+SI=2P→22500 = 2P→P = 11250

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Filed Under: Simple Interest
Exam Prep: Bank Exams

Q:

The sum of two numbers is equal to thrice their difference. If the smaller of the numbers is 10 find the other number.

A) 15	B) 30
C) 40	D) None of these

Answer & Explanation Answer: D) None of these

Explanation:

Let larger number be x and smaller number be y.

Also, y = 10

According to question,

⇒(x + y) = 3((x –y)⇒(x + 10) = 3(x –10)

⇒2x = 40⇒x = 20

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Filed Under: Numbers
Exam Prep: Bank Exams

Q:

A bag contains 25 paise, 50 paise and 1 Rs coins. There are 220 coinsinall and the total amount in the bag is Rs. 160. If there arethrice as many 1 Rs. coins as there are 25 paise coins, then what is the number of 50 paise coins?

A) 60	B) 40
C) 120	D) 80

Answer & Explanation Answer: A) 60

Explanation:

Let there be x one rupee coin, y 50 paise coin, z 25 paise coinx + y + z = 220......(i)

Total amount = 160

Now, x + (y/2) + z = 160 ......(ii)

⇒4x + 2y + z = 640

Thrice as many 1 re coin as 25 paise

⇒x = 3z ......(iii)

On solving equation (i), (ii) and (iii), we get

z = 40x= 3* 40 = 120y = 220 –(120 + 40 ) = 60

So, 50 paise coin =60

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Filed Under: Simplification
Exam Prep: Bank Exams

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