Exams Questions and Answers

Q:

A certain sum is invested at simple interest at 18% p.a. for two years instead of investing at 12% p.a. for the same time period. Therefore the interest received is more by Rs. 840. Find the sum ?

A) Rs. 5858	B) Rs. 8800
C) Rs. 7000	D) Rs. 6350

Answer & Explanation Answer: C) Rs. 7000

Explanation:

Let the sum be Rs. S.
(S x 18 x 2)/100 - (S x 12 x 2)/100 = 840 => 36S/100 - 24S/100 = 840

=> 12S/100 = 840 => S = 7000.

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Filed Under: Simple Interest
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Q:

If 12 men can reap 120 acres of land in 36 days, how many acres of land can 54 men reap in 54 days?

A) 710 acres	B) 760 acres
C) 810 acres	D) 860 acres

Answer & Explanation Answer: C) 810 acres

Explanation:

$\begin{matrix} 12 m e n & 120 a c r e s & 36 d a y s \\ 54 m e n & ? & 54 d a y s \end{matrix}$

As 12 men can reap 120 acres, 54 men will be able to reap more acres in 36 days, 120 acres of land was reaped, so in 54 days, more land will be reaped.

Thus, the numbers of acres that can be reaped by 54 men in 54 days = $\frac{54}{12} x 120 x \frac{54}{36}$ = 810 acres

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Filed Under: Ratios and Proportions
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Q:

Arun, Bharat and Chari started a business in a partnership with investment of Rs 12000, Rs 26000 and Rs 32000 respectively. After 4 months Arun leaves. After 6 months Bharat leaves and Arun joins with an amount equal to his earlier investment. After 10 months, Chari leaves and Bharat joins with his prior investment. At the end of the year they earn a profit of Rs 53622. Find the share of chari in the annual profit?

A) 16547	B) 17212
C) 14875	D) 27848

Answer & Explanation Answer: D) 27848

Explanation:

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Filed Under: Partnership
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Q:

A retailer buys product from a shopkeeper at discount of 40% on the list price (marked price) and sells them to the customer at a discount of 25% on the list price.What is his profit percentage ?

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

Answer & Explanation Answer: D) 25%

Explanation:

Let the list price be Rs.100.

Therefore, the retailer is buying the products at Rs.60 and selling it to the customer at Rs.75, earning a profit of Rs.15.

Therefore, his percentage is = $\frac{15}{60} x 100$ = 25%

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Filed Under: Profit and Loss
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Q:

Hari Ram’s present age is three times his son’s present age and two fifth of his father’s present age. The average of the present age of all of them is 46 years. What is the difference between Hari Ram’s son’s present age and Hari Ram’s father’s present age?

A) 44 yrs	B) 56 yrs
C) 67 yrs	D) 78 yrs

Answer & Explanation Answer: D) 78 yrs

Explanation:

Let Hari Ram's present age = x

Then, his son's age = x/3

Father's age = 5x/2

$\frac{x + \frac{x}{3} + \frac{5}{2} x}{3} = 46 = > x = 36 yrs$

Now the required difference = $\frac{5}{2} x 36 - \frac{36}{3} = 78 yrs$

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Filed Under: Problems on Ages
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Q:

Which state is known as land of setting sun in India?

A) Rajasthan	B) Arunachal Pradesh
C) Kerala	D) Gujarat

Answer & Explanation Answer: A) Rajasthan

Explanation:

Arunachal Pradesh is known as the land of rising sun whereas Rajasthan is known as the land of setting sun in Indian states.

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Filed Under: Indian Geography
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Q:

The length of a class room floor exceeds its breadth by 25 m. The area of the floor remains unchanged when the length is decreased by 10 m but the breadth is increased by 8 m. The area of the floor is

A) 5100 sq.m	B) 4870 sq.m
C) 4987 sq.m	D) 4442 sq.m

Answer & Explanation Answer: A) 5100 sq.m

Explanation:

Let the breadth of floor be 'b' m.

Then, length of the floor is 'l = (b + 25)'

Area of the rectangular floor = l x b = (b + 25) × b

According to the question,

(b + 15) (b + 8) = (b + 25) × b

$b^{2} + 8 b + 15 b + 120 = b^{2} + 25 b$

2b = 120

b = 60 m.

l = b + 25 = 60 + 25 = 85 m.

Area of the floor = 85 × 60 = 5100 sq.m.

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Filed Under: Area
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Q:

Identify the diagram that best represents the relationship among the given classes.

Graduates, Doctors, Professors

A) 1	B) 2
C) 3	D) 4

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