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Q:

The Shopkeeper increased the price of a product by 25% so that customer finds it difficult to purchase the required amount. But somehow the customer managed to purchase only 70% of the required amount. What is the net difference in the expenditure on that product?

A) 10% more	B) 5% more
C) 12.5% more	D) 17.5% more

Answer & Explanation Answer: C) 12.5% more

Explanation:

Quantity X Rate = Price

1 x 1 = 1

0.7 x 1.25 = 0.875

Decrease in price = (1-0.875) x 100 = 12.5%

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Filed Under: Percentage

Q:

Abhinav scores 80% in physics and 66% in chemistry and the maximum marks of both the papers are 100. what percent does he score in maths which is of 200 marks, if he scores 80% marks in all the three subjects:

A) 74%	B) 84%
C) 87%	D) 83%

Answer & Explanation Answer: C) 87%

Explanation:

$\frac{80}{100} + \frac{66}{100} + \frac{x}{200} = \frac{320}{400}$

=>x = 174 => 87%

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Filed Under: Percentage

Q:

600 students took the test on physics and chemistry. 35% students failed in physics and 45% students failed in chemistry and 40% of those who passed in chemistry also passed in physics, then how many students failed in both:

A) 162	B) 138
C) 60	D) None of these

Answer & Explanation Answer: D) None of these

Explanation:

Physics Chemistry

Failed 35% 45%

Passed 65% 55%

Passed in both = 22% of total student

percentage of students who are passed in any of the physics or chemistry or both =(65+55) - 22 = 98%

So, the percentage of students who are failed in both = 2%

Therefore, total failed (in both subjects) students = 12

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Filed Under: Percentage

Q:

A Shopkeeper charges sales tax of x% upto Rs.2,000 and above it he charges y%. A customer pays total tax of Rs 320, when he purchases the goods worth Rs. 6,000 and he pay's the total tax of Rs. 680 for the goods worth Rs. 12,000. The value of (x-y) is:

A) 0	B) -2
C) -4	D) 5

Answer & Explanation Answer: B) -2

Explanation:

$2000 x \frac{X}{100} + 4000 x \frac{Y}{100} = 320$

and $2000 x \frac{X}{100} + 10000 x \frac{Y}{100} = 680$

x = 4 and y = 6

x-y = -2

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Filed Under: Percentage
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Q:

A projectile launched at____ degree angle has the greatest range?

Answer

45

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Subject: Physics

Q:

Which is the strongest force in the universe?

Answer

Nuclear Force

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Subject: Physics

Q:

Which is the weakest force in the universe?

Answer

Gravitational Force

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Subject: Physics

Q:

What is unit of Astronomical distance ?

A) light year	B) angstrom
C) weber	D) lux

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