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Q:

$112 \times 5^{4} =$

A) 68947	B) 69874
C) 70000	D) 76000

Answer & Explanation Answer: C) 70000

Explanation:

$112 \times 5^{4} 112 \times {(\frac{10}{2})}^{4} = \frac{112 \times 10000}{2^{4}} = 1120000 / 16$

= 70,000.

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Filed Under: Simplification
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Q:

The concentration of glucose in three different mixtures (glucose and alcohol) is $\frac{1}{2}, \frac{3}{5} a n d \frac{4}{5}$ respectively. If 2 litres, 3 litres and 1 litre are taken from these three different vessels and mixed. What is the ratio of glucose and alcohol in the new mixture?

A) 3:2	B) 4:3
C) 2:3	D) 3:4

Answer & Explanation Answer: A) 3:2

Explanation:

Concentration of glucose are in the ratio = $\frac{1}{2} : \frac{3}{5} : \frac{4}{5}$

Quantity of glucose taken from A = 1 liter out of 2

Quantity of glucose taken from B = 3/5 x 3 = 1.5 lit

Quantity of glucose taken from C = 0.8 lit

So, total quantity of glucose taken from A,B and C = 3.6 lit

So, quantity of alcohol = (2 + 3 + 1) - 3.6 = 2.4 lit

Ratio of glucose to alcohol = 3.6/2.4 = 3:2

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Filed Under: Alligation or Mixture
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Q:

25% of 25% Is Equal To

A) 0.0625	B) 0.0210
C) 0.03145	D) 0.3210

Answer & Explanation Answer: A) 0.0625

Explanation:

25% of 25% means

25/100 of 25/100

i.e, 1/4 of 1/4

or in other words 1/4 x 1/4=1/16

Hence, the answer is 1/16 = 0.0625.

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Filed Under: Percentage
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Q:

Sweety is 54 years old and her mother is 80. How many years ago was Sweety's mother three times her age?

A) 20	B) 41
C) 26	D) 33

Answer & Explanation Answer: B) 41

Explanation:

Given P = 54 and M = 80

According to the question,

Let ‘A’ years ago, M = 3P

=> M - A/P - A = 3

=> 80 - A = 3(54 - A)

=> 80 - A = 162 - 3A

=> 2A = 82

=> A = 41

Therefore, A = 41 years ago Sweety’s mother was 3 times of Sweety’s age.

Hence, at the age S = 13 and M = 39.

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Filed Under: Problems on Ages
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Q:

Find the Next Number in the given number series?

3, 10.5, 36.75, 128.625, ?

A) 450.187	B) 442.151
C) 441.231	D) 456.852

Answer & Explanation Answer: A) 450.187

Explanation:

Pattern is

3

3 x 3.5 = 10.5

10.5 x 3.5 = 36.75

36.75 x 3.5 = 128.625

128.625 x 3.5 = 450.187

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Filed Under: Odd Man Out
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Q:

How long are professional Golf Tour Players allotted per shot?

A) 22 seconds	B) 36 seconds
C) 41 seconds	D) 45 seconds

Answer & Explanation Answer: D) 45 seconds

Explanation:

Professional Golf Tour Players were allotted 45 seconds per shot.

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Filed Under: Sports
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Q:

2.5, 3.5, 9, 40, ?

Find the next number in the above-given series?

A) 316	B) 328
C) 323	D) 340

Answer & Explanation Answer: B) 328

Explanation:

2.5 × 1 + 1 = 3.5

3.5 × 2 + 2 = 9

9 × 4 + 4 = 40

40 × 8 + 8 = 328

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Filed Under: Odd Man Out
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Q:

A man spend 20% of his monthly salary on his children's education and 50% of his salary on food and transport. After Paying the rent of Rs.1000, he is left with Rs.2000. What is his monthly salary?

A) 7000	B) 10000
C) 14000	D) 20000

Answer & Explanation Answer: B) 10000

Explanation:

Let his monthly salary be 'P'

20% on children's education = $\frac{20 P}{100} = \frac{P}{5}$

50% on food and transport = $\frac{50 P}{100} = \frac{P}{2}$

1000 on rent

=> $P - \frac{P}{5} - \frac{P}{2} - 1000 = 2000 = > 3 P = 30000 = > P = 10000$

Therefore, his monthly salary = Rs. 10,000

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Filed Under: Percentage
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