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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 liquid that shows Capillary fall?

Answer

Mercury

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Subject: Physics

Q:

A body given with an initial velocity moved under the effect of gravity is called?

Answer

Projectile

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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:

If lift is going up with acceleration, the apparent weight of a body is

A) may be more or less than true weight	B) more than the true weight
C) less than the true weight	D) equal to the true weight

Answer & Explanation Answer: B) more than the true weight

Explanation:

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Filed Under: Physics

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